TC02C conversion kit and brushless motor

[dapanz]

Hi guys, I decided to finally use the TC02C conversion kit I bought months ago. Everything has gone well, but when the car was finished, I tryed to put a brushless motor, but it didn't fit since the rear end of the motor touched a part of the chassis (it's difficult to explain in English, but at the rear end of the chassis there are two "protuberances" where the screws that link the rear T to the chassis ended, anyway I've attached a picture from the manual). I use an Ansmann brushless motor (Xirius Race 10T).
The only thing I've done differently from the manual is that I've tryed to mount the motor before linking the whole rear end to chassis, instead in the manual first you mount the rear end with the motor and then link it to the chassis, but I don't think that this could be the matter, since I don't think that you have to disassemble the whole rear end in order to change your motor...
Thanks for your help and sorry for my English but I'm Italian