Measure the crank snout with a micrometer, (if you don't have one the local machine shop may lend you one) then have the above mentioned local machine shop measure the inside diameter of the balancer.

Now have the machine shop machine the balancer for .001 to .0014 fit.

NO HAMMER.

True, hammering doesn't damage the crank, but it raises hell with the htrust bearing.

Why is ther never enough (time or money) to do it right, but always enough to do it over???????????????????????