RE: Balancing My Tiger 2
Is your battery pack as far forward as you can get it? It should be under the fuel tank if it will fit there. And you may want to move the rest of the radio equipment as far foward as possible too.
There are other things you can do as well. Heavier spinner or prop nut, APC props are a litte heavier than wood so that will help. And may be a larger motor!
Last resort add lead to nose! It happens.