I need a HONDA DRIVEABILITY EXPERT.....This van had the rear(firewall)cylinder head camshaft break,it damaged the head,the timing belt was in tact and was driven a short ways.I put on a used cylinder head with cam and rockers,new timing belt,tensioner and idler pulleys,water pump,Spark Plugs,EGR Valve,Flushed crankcase and changed filter,Changed trans fluid 4 times,RECHECKED -- Camtiming and valve clearences are within spec...Swaped coils and plugs around Missfire still on same cylinders. Compression #1-220# #2-220 #3-230 #4-225 #5-225 #6-225 It idles good and has Lots of power when you step on it.It only sets codes on highway in overdrive converter locked up....