I havent bought a Cup Racer kit since im still mulling over a choice of either the ABC Genetic, HPI Cup Racer or any equivalent chassis. my criteria for buying one would be a combination of ease of assembly and availability of spare parts (emphasis on the latter)
while it is noble to point out any possible flaws of a given product to give awareness to the potential or existing buyers, it is entirely a different matter to continuously state unwarranted negative comments about a product to the point that "trolling" and "flamebait" are inevitable.
if you want changes to be made to improve a product, ranting on websites like a grumpy old man is an utter waste of time. do the direct approach. send your comments straight to the manufacturer. it always works.
i've said my piece...
just my 2 cents in...