more on motor probs

its a crt.5 rcm with truck tires,13/46gear,mamba max,medusa36-60-3100kv,on 3s490029c. The motors never been hotter than160 .the esc runs 140/160.The truck weighs 5lbs 5oz and the drive train is fresh and free rolling

so guys i finaly found a buddy with a thunder power 4900 40c 2s to do a final check on the" my cells arent powerful enough" theory.and its the same thing no throtle respons on the bottom and gobs mid and high imput but even at full throtle if i peddle it it takes time to rev back up, im thinkin the 36-60 3100 is to much motor for this ESC. However im still thinking about the bec and the cap. but im not clear on how to wire it in or what and how it will improve my problum. I think the reason the esc is getting hot "only" on 3s is that its to much motor(36-60/3100) and that if i switched to a 36-50 on 2s it might get better.Any expiriences like that out there?