I stole your picture dpb318 to show this. The plate is thick enough and supported well enough that it doesn't flex except for these 2 little spots. I don't think it will be a problem though.
I didn't have to drill out any of the holes in the cross braces either like coolrunnings. Coolrunnings you may have just been unlucky as I know there were some mixups with the cross braces in this kit.
Savage: FLM Conversion, 6s, MMM, CC 1520.
Mini-T Pro: Micro Pro 6800kv, Lipo, HS-81mg, Dirt Hawgs
M18MT: Quark 33A, Y22S 6000kv, FP 2s Lipo
LRP S8-BX: RC-M Conversion, Tekin RX8 B1600KV, 6S.