just tried to fit ally timing cover using a home made sleeve to align seal with crank and can't get bolts in!!

any one else had same problem?  2nd question .... the four bottom bolts that hold front truck mount   found 3 at 3/8 unc and 1 at 5/16 is that normal or should all 4 be 3/8    just seems odd

thanks for help

stuey England