I have rehearsed and gigged with the bass now, in fact I'm using it for a lunchtime gig tomorrow. So far I've replaced the pickup, it was originally an Entwistle but I tried a generic one that I got from AxesRus a few years ago that I liked due to it's big dynamic range. It's a bit clearer than the Entwistle too.
It cut's through nicely without being too loud, great in the folk rock band I'm with tomorrow but not big enough for the country rock trio that I also play in.
I've replaced the strap buttons with piano frame bolts (they hold the frame to the case) , this extends the position of the strap and improves balance.
I can't stand those piddly little screws! There is no way these bad boys are working loose.