Comment
the standard B31 cams I had them re profiled by a reputable cam people they were ground to fast road (touring)? so they still have the 2 markings on them 1 dot 1 slot as you know I am still having problems getting this B31 to start I swopped the cams round this doesn't seem to make any different to the starting could I put a slot on the cam to a dot on the crank end markings because I am wondering whether these cams were ground properly and would a set of M20 cam work in the B31 engine to see whether this is the problem thanks roger 
email (option): roger.beck@node6.com