ok i have an 86.5 supra 5spd its got a newly rebuilt engine in it and needs valve shimms and the ks rewired. it misses after its warmed up a bit could this be from a bent valve? if so could this have been caused by driving the car without the valves being shimmed and the ks being rewired. a shop here said that it sounded to them like a bent valve. what do you guys think?:1zhelp: