I am very satisfied with mine. I bought it Tuesday, had it completely assembled on Thursday. I ran two packs through it Friday to shake it loose then went to the local club race Saturday. Qualified 3rd with fastest lap and finished 4th, good for me! With a little more consistency I am in the top 3! Very happy, our track is a big 1/8 style track but the 4x4s run hard and fast on it. Props to the Castle 1410 and MMP, hung in there nicely with all the big 550 cans.