Unforutunately the timing belt is going to tap no matter what....there is a fix by putting washers with the bolts that hold the cover on to extend it a little so it doesn't tap.
Hector
2003 Rally Red Mitsubishi Evolution VIII
257HP/259TQ
2005 Lapis Blue Mazda 6s
RET: 00 Cabernet Red Ford Contour Zetec ATX SUPERCHARGED
160HP/141TQ