OK I have been having a mess with it, I was happy with my bridge position and it sounded quite nice overall so I made a jig to work from
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You can see it is on its bottom limit with the action about 8mm upto 10mm G-E, Took the bridge off and made marks showing the bass and treble foot and its direction, then marked a few mm off the foot, you can see the treble foot does not sit very flat on the wheel too.
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The brass posts were too long because on their lowest setting without the wheels fitted they only had 1mm more gap than the wheel thickness anyway, I took a bit off the post and bevelled the ends again, after refitting the treble side was still to long so I took about 6mm off the thread on that one to give me plenty of adjustment back, they are both well planted though probably 15mm of thread still in each foot.
Refitted it all, messed for ages decided to move the bridge lower to get the bridge to sit nearer the f hole notches while upright and with a 105cm scale length, ended up having to pull the bridge a couple of mm to the bass side to get the strings to run parallel and to get the heights I wanted! made a new jig from tape but ended up with a lot more thread on show than wood I removed, probably because of moving it away from the neck a bit?
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Anyway it plays well now with the action about 6.5mm on the G up to about 8mm on the E, no nasty buzzes or rattles, I may of lost some volume but for now playability comes before sound. I have some lessons lined up hopefully, if it needs more work in a few months I will bite the bullet and let Timothy Toft's sort it out