KiOgon

As said by @NickA, it appears the J pup wires are crossed, can't be sure from the photo'

Lozz has ordered 3 P-bass wiring looms from me lately, he's a real pleasure to deal with and we all know how much Lozz loves his P's From enquiry through, spot on communications, instant payment - everything you'd expect from a top bloke. Cheerz, John

OK not frequency as such - how often does it tick?

Have you tried it in different places/buildings? It could be RFI, something in your house or area. What frequency is the tick?

Deathwatch Beetle? - " Deathwatch beetle alert. Q We have deathwatch beetle, and I am in a quandary about what to do. Although I can't see obvious bore holes, I heard their telltale clicking during April and May." (From The Telegraph) Seriously though, could be anything from the pick up's windings through to wiring, pots, cap. or jack socket. As it's a Jazz bass, this may not apply: http://www.buildingconservation.com/articles/beetle/beetle.html

Not Yamaha's nut fault - those phat b'stards were never going in that slot

Don't send 'em round here then, my fence has just cost me >£2.5k

A wise move I reckon

The photo showing the neck heel also shows a pot and wiring, that ain't a CTS pot and the grey screened lead shown soldered to the pot ain't Fender either, so I doubt the pick ups are. POS IMHO.

Of course if you don't like chicken you could try GHS Fast Fret https://www.gear4music.com/Guitar-and-Bass/GHS-Fast-Fret-String-Lubricant-4oz/7CT?origin=product-ads&utm_campaign=*PLA+Shop+-+All+Products&utm_medium=vertical_search&network=google&adgroup=**All+Products&merchant_id=1279443&product_id=9533d1&product_country=GB&product_partition_id=29215885694&gclid=EAIaIQobChMIurjMnuv_2QIVSpPtCh0nIAmeEAQYASABEgJA7vD_BwE Other lubes are available

If it was mine, I would make sure I had compatible varnish and thinners by testing on a hidden area, maybe under a tuner, make sure there's no reaction between old and new. Then apply thinned varnish to the cracks, gaps and especially under the decal where it's lifting, pushing the decal down flat onto the wet surface underneath until it sticks. When dry, build up layers as required, finishing with a coat or three over the whole area. Patience will be required!

DodoJuice, maybe after the T-cut https://www.amazon.co.uk/Dodo-Juice-DJBVP30-Carnauba-Velvet/dp/B003JJ3GX2/ref=pd_rhf_ee_s_pd_session_scf_1_5?_encoding=UTF8&pd_rd_i=B003JJ3GX2&pd_rd_r=SDW8MC8PS66YGJ4Q5MND&pd_rd_w=5M1O3&pd_rd_wg=28mN6&pf_rd_i=desktop-rhf&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_p=1667995087&pf_rd_r=SDW8MC8PS66YGJ4Q5MND&pf_rd_s=desktop-rhf&pf_rd_t=40701&psc=1&refRID=SDW8MC8PS66YGJ4Q5MND

http://guitardaterproject.org/fender.aspx

Or Halloween Pumpkin?

Technically - Nylon strings won't work on a electric bass or guitar You mean nylon covered, maybe tape wound?

Dodo Juice, a little goes a long way; https://www.amazon.co.uk/Dodo-Juice-DJBVP30-Carnauba-Velvet/dp/B003JJ3GX2/ref=pd_rhf_ee_s_pd_session_scf_1_5?_encoding=UTF8&pd_rd_i=B003JJ3GX2&pd_rd_r=SDW8MC8PS66YGJ4Q5MND&pd_rd_w=5M1O3&pd_rd_wg=28mN6&pf_rd_i=desktop-rhf&pf_rd_m=A3P5ROKL5A1OLE&pf_rd_p=1667995087&pf_rd_r=SDW8MC8PS66YGJ4Q5MND&pf_rd_s=desktop-rhf&pf_rd_t=40701&psc=1&refRID=SDW8MC8PS66YGJ4Q5MND

https://en.wikipedia.org/wiki/Carnauba_wax Available in many forms, I use one supplied for gunstocks, in a bottle or a tube. Expensive example: https://www.amazon.co.uk/Boora-WAX002-Carnauba-Wax-Paste/dp/B0038KR93K Cheerz, John

It sounds like you are measuring correctly, you'll probably find the 6.9k may be a bit less output than the bridge, so - trial and error - it might work out ok depending on how you like to mix the pups. OTOH of course, it may be the wrong pick up, or even be short of a few windings! Cheerz, John

Huge double congratulations Nick, so pleased to hear you are in the clear and love the Ray John

When my Dad chose the woods for my first bass in 1964/5 he brought home Obeche for the body and Sapele for the neck. It made a fabulous sounding Pear shaped/Teardrop fretless. Wish I still had it now

All wood is beautiful, I wouldn't be swayed by first appearance - stick with your plan A - if you want a solid colour - do it!

Exactly what I was thinking, I also started a thread about the missing edit in PMs but _ _ _