The clone has nothing to do with a well known shop owner like Brian deciding to retire.
He was buliding an almost equal amount of Flatheads, Clones, and Animals.
The overall shift in karting in general was probably a greater influence on his decision than anything.
Maybe Brian will pop up on here some day and explain better.
His new endeavor...High Side Hobbies, probably had a lot to do with his decision. One of the best new indoor RC dirt tracks to hit the midwest. Guys local to me have attended races there and I live five hours away.
Most of us in this industry were shocked when Ronnie and Becky Robinson closed up Robinson Speed Shop at the peak of their success. But, Ronnie and Becky are doing better today than when involved in karting and enjoying life way more. Running a kart shop or engine business is very demanding of a persons time.