[WardL]

I'm no expert, but one thing I would try is rolling the Cobra forward a few feet and back a few feet and listen for unexpected sounds. I had clunking in my suspension which showed up as bad wheel bearings. My case is probably 1 in 1,000 but it would have been nice to know that early on. The other criteria is just what does "professionally" build really mean? Most FFRs are NOT professionally built. The best one I have seen is one made by a Boeing machinest. I would want to know who the builder was and if he had built more than the one you are looking at. The money is all in the construction.