I would like to try and defend your problem but I really can't, its been about a 60 / 40 shot with 40 being the bad side. The Mammoth is designed almost perfectly but the quality of the basic RTR leaves much to be desired. If the $150.00 had been put into your Mammoth as upgrades before you got it you would have been much happier. I would recommend a Mammoth Kit over any other kit in the industry but the RTR I Modify before selling it to my customers. Hope you get it straightend out.................if I can help just PM me and I'll do what I can [:-]