G2R Chassis dogbones dont fit!

I've just put together my G2R revo conversion but my dogbones are slightly out. The rear one is about 2mm too long and the front one is 2mm too short. I don't care too much about the short one it still fits, its just sloppy. I know my single speed tranny is in the right way, it can only really go in one way.

Has anyone had this problem?

I can either drill holes in my Xbraces right next to the existing ones so the tranny moves 2mm; or drill holes in the plastic tranny right next to the existing holes. Either option sucks because it'll weaken my beast. The third option is to find somewhere that makes custom length dogbones.

What do yous reckon??