Q- Do your flat head screws sit flush? In some of the pics it looks as though they may not be. It could be an optical illusion - or, I thought maybe those screws have a small radius on the inside corner that may be riding on your holes and slots (as in the motor mount).
Losi 8T 1.0, Savage Flux - XL style, LST XXL, Muggy, 3.3 E-Revo Conversion and sitting outside 425hp, 831 Tq Dodge Ram Turbo Diesel. It SMOKES