I have trouble fitting the Venom 2000 mAh 20C batteries or others of the same dimension. They will go but are tight. The Venom 5000 mAh 30C fits snugly but is easier to get in and out because of the case design. I had to chip off some of the swing bracket on each side to allow the plugs to be accessible. Not a difficult mod.
I plan on running mine in USGT and the son is racing his in USVTA. The mods you are offering here have made the difference.
Thanks!