I've been having trouble controlling feedback at high volumes and with a lot of gain from the bsiab2. I cover the strings with my hand and there's still feedback I think my problem is the guitar itself. It's got the 'swimming pool' route and I think this allows the pickguard to flex more than normal and it becomes microphonic.
The pickup is a Bill Lawrence and it's epoxy potted. So I don't think the pickup is the problem. When I tap the pickguard it's pretty loud.

Hi, Does anyone know where i can get some replacement rubber grommets for strat pickups (you know the bit that goes around the screw on each pickup??

Heres a diagram for the mods I did to my Godin Freeway Classic guitar. It can be used on just about any guitar though.

It uses a push/pull Volume pot to switch in a boost (but any circuit at all could be used of course. switching circuits is extremely easy and circuits can be switched in 1 minute or less). It also uses a push/pull Tone pot to do phase reversal for the middle single coil.

I also added humbucker sized P-90s in it (GFS Dream 90s from Guitar Fetish) in place of the humbuckers....