No I bought an M8 spline tool on eBay and used my ratchet set to split them. Took it nice and steady to make sure I didn't damage the bolt heads. It's quite easy and the centres come off without any fuss once the bolts are out.
There's 16 bolts in each wheel so it takes a while to get through them.
I've been using sanding pads on a drill kti to strip the the lacquer on the lips but it's tricky and the pads keep breaking. I'm gonna try using a flap wheel on the drill to see if that makes life any easier. I've got one wheel stripped so far and it's starting to look good. Patience is a virtue n all that!!
Had a quote from Pristine to powder coat the centres at £40 each + VAT - dunno if that's good or not????