I know that I am the new guy on the block but in response to your “battery locations” thought, what I have done is placed both of the 5 cell NiMh batteries (ignition and radio) on either side of the gas tank similar to what iflyfastashell posted in a photo on the 28th of September. If you place the 2.4 GHz receiver auxiliary unit somewhere else it will fit with foam just fine. Since I have not finished the engine mounting I cannot tell you how that balances, but it fits great. Also instead of placing the auxiliary receiver unit there, I placed it back and down so I could have the antennae at 90 degrees to the main and also be perpendicular as stated for “best practices” in the manual. That is what I have done, offering it to any that want to read.

jimm