Hey Boss, I didn't see where if you were running an aftermarket cam. but I bought a bunch of KA24e stuff off a dude and it came with a brian crower low boost custom grind cam. I've got no use for it, would you be interested?
When I swapped 280zx brakes and 200sx master cylinder on my dime I ran into the same brake problem. Turns out the push rod that went into the master from the pedal assy was keeping a little bit of pressure on the brakes and everytime I pushed the pedal they'd drag a lil more. All I did was take some of the adjustment out of the push rod and I haven't had a problem since.
A few links to help you with your quest for knowledge. I got a SK setup also, cant wait to get them running.
http://www.racetep.com/tepoer.html
http://www.zccjdm.com/catalog.php/azcarbum/ct27192/O.E.R._AKA__SK__DCOE_CARBURETORS
http://www.zccjdm.com/catalog.php/azcarbum/dt84283/pd1938012/A_OER__SK__RACE__DCOE__CARBURETORS_