i will keep hush on my opinion of some other builders but in my own experiance rob at RDZ treated me right ..he said hed make me a great cheetah cub pipe that reved insane high rpms over a wider powerband than most and he did just that in my case ,they dont fit exaclty perfect like some pipes and they dont look the prettiest like some others do ,but they perform exactly as stated and yes ive owned shearers before ...and theyre sold now (not that matt shearers work is subpar ,cause its right up there top of the line stuff IMO) i say if your not happy with the portwork or quality id call him up immediatly and let your concerns be heard so he can make it right . cobwebs ... never heard of that before