I made a ramp for my 4005 for different reasons.
First disclaimer, I have a strange style of playing. Is it right? No. Do I care? No.
I like anchor my thumb on a pickup (or the strings depending which string I'm playing) and the 4005 pickups are at extreme ends of the playing area not making them ideal for this. Also the strings are a long way from the body due to construction methods, making string anchoring feel very odd as there is no body in contact with my thumb tip. In the heat of the battle I could accidentally lose my thumb through the strings, the depth of the gap is that much.
The answer was a pickup height ramp, not to stop me digging in, I dig in a lot, but to give me a full length 'pickup' to anchor on.
The other weird bit of my style is that I tend to hook the edge of my pinky on the side of the pickup, I think it gives me a reference point and helps keep my hand in place as I can get quite active playing live. So I carved a 'pinky point' in the end of the ramp.
I didn't want a huge lump of wood spoiling the look of the front of my bass so I made it out of perspex, but then couldn't double side tape it on so it's screwed on. Does it add weight to an already heavy bass? Yep. Do I care? Nope.
Told you I was weird. 😁