I have recently brought a second hand nitro rc but it looked brand new,im a total noon to nitro rc so im not sure what make or model it is but i have pics if this helps,anyway i took it for a firat run today and it starts lovely after 3/4 pulls but after about 30 seconds of deiving the front right wheel came off,i just thought it must have came loose so i tightend it and gave it another run,the same happend again,any suggestions as to what this may be,? Cheers