hey there i took my car in for a dyno setup the other day and was well astounded at how crap it is , a quick run down of what it has

oversized pistons + lightend and ballenced bottom end
mfi head witch kent cvh 27 cam shaft with solid lifters + vernier pulley
beleive stage1 headwork
running on a DMTR carb (24 /25 chokes)
manual fuel pump and bosch red top distributor
sportex xr3i manifold on a 2.4 inch ashley competion exhaust system
MSD blaster coil and 8.0mm ht leads

it ran 64 bhp (88 fly) at 5.500 rpm
also since ive got it back it has what sounds like a missfire and revs up extremely slowly also runs far hotter then befor i took it in

any idea's what it could be ? the guy at the dyno (Jeff Bluur nottingham) said that because this cam is such high end it has no vacuum so my vacuum advance distributor doesn't work properly
any help would be much apreciated
ive tryed a few things already thinking the missfire could be because a lead is out of sequence etc tryed a few different ways and it only runs one way
cheers