Twin elevator servos are about 80 grams too heavy in the tail compared to a pull pull setup. That much extra tail weight needs a corresponding amount of nose weight to balance right, or about 8 ounces. If you have about that much live nose weight you can play with, consider yourself lucky. But don't just add dead weight unless it's a last resort.

the left gear leg looks like it has mounting holes drilled incorrectly. It shouldn't be that hard a fix.