Sorry the hear about the broken fuse on your Tiger.

Mine came out tail heavy as well. I put a 2oz prop nut, moved the engine forward on the mount and added an additional 1 oz of lead to make it balance. Sounds like you should get close with the heavier engine. Just don't drill the engine mount holes until you're ready to balance it. That way you can shift it around a little to balance it.

-tychoc