MGTD pulley Belt

["Mike Razor" <mrazor@mis.net>]

Have a 39 inch belt, it is to long, generator is adjusted all the way
out and at times it bangs on the hood..  Got a 38 inch belt and the
generator is adjusted all the way in and the belt will not make it all
the way around the required pulleys.
Can't figure it out.  I know that one less inch extrapolates out quite
a bit after it winds it way around the pulleys, but it is only an inch
less than the old belt and I have at least 1 1/2 inches of adjustment
on the generator.
Mike R