Hi Itch b, i pm you before i post my q's here, anyhow yours is the mrr2 pro v2.1 right? Do you have any durability issue with it? I m going to put a 5.5 brushless in it and i ll be running/racing it against the normal 1/10 touring (my local club actually allow this) on an outdoor asphalt parking lot track. Any advice which parts should i stock?