B310gx, I've been using the Hoosiers since 2011 and run them at the same tire pressure I always have. When I installed the H190 I likely got something wrong. I am perfectly willing to play with tire pressures on the Hoosiers BUT when I bought the latest set of tires, the tire guy convinced me to try a set of Avon ACB9's as we think they may have some benefits.
As for fabbing up parts it is not a big deal, I have some links left form the sports racer that happen to be very close to the right length.
On the fancy parts versus driver talent, I have always felt that it's good to at least start with a basic car so that the driver has to dig for it.