Chuck! Not sure what you have as a shaft Dia.& Length! However, if you install a dampener it will give you about 1inch more from the bearing to the prop.
So here's my questions to you
1. What engine is installed?. Should be Yanmar 2GMF
2. Please validate the engine is mounted in it's proper placement. If they moved or did a re-drill holes for new motor mounts, it could be they moved the engine 1 inch or so towards the bow. Please take some pictures and post here.
or PM me with your contact info.