Inliners International Forums General Discussion Drive Train Manual trans. grinds going to 1st and rev.

I found when my used flywheel is installed the disc surface to crank shaft(back side of flywheel-mating surface for the crank) measures 15/16".
This is 1/4 less than my old recessed fly wheel. How does this sound? Maybe the used flywheel I have has been turned way to many times?

Please help! Clyde