Any Forum members played around with bigger engines for these lil suckers?? seen that RS4 Motor fits in an only requires lil dremel work.. seems that after a lil tonk round the back yard track the mini t died.. figured ok can handle this.. isnt 48 hours old yet.. will take it back see what mr lhs man has to say... tells me to use machine oil in the motor...an slip gear.. ok... one-2 drops on each..done! now it worked that night but now wont go, i got a full recharged 7.2 pack in it an nothin. i got heaps on the steering but nothin on the motor. Now i did take it to another lhs...on springy road... not mentioning names but not happy... an showed the bloke in there.. he connected the battery round the rong way didnt he!! hmm gotta HATE the smell of burnin plastic.. So where do i start..?!? is the motor good?? is the battery rooted?? do i go back an complain!? or should i bite my tounge, learn from experiance an just settle for a new motor an hope it fixes problem?! HELP its 400 down the drain if its stuffed!