Check the toe setting on the rear wheels. Some people add a small amount of toe out to help the car turn, but it can lead to oversteer. I always preferred straight ahead to slightly in (Note, on another FWD. I've never raced a CRX). Also, something could have gotten bent in the rear (curbing, worn parts, etc.) which has caused too much toe out. Is it worse in one direction or the other. The best way to check to make sure everything is square, and the thrust angle of the rear wheels is correct (i.e. so the car won't crab) is to "string" the car. Copied from Hoosier Tires web site "Stringing: A procedure for checking the toe of the front wheels. Basically, it consists of running a string down the side of the car; with the steering wheel pointed straight ahead, the distance between the front edge of the wheel and the string, and the rear edge of the wheel and the string, is then measured; the difference between the two distances gives the toe angle." This is also done for the rear wheels. You should be able to find a detailed procedure with a little more searching.
