Jimbo_Bimbo

I've had to change rear brake pads, and have found the same problem as quite a few...brake pad pins rusted in place.

So i got a repair kit cos one of the pistons looked a bit seized. Everything was going well until i tried to undo the bolts to split the caliper. One of them stuck fast. No idea how to loosen it, tried pebetrating stuff but no use.

Question is...do i really need to split the caliper to change the piston seals and clean the pistons up? If i do, does anyone have any tips on undoing the caliper bolts?

Thanks
Jim