Suspension question

[84gt347]

my car hooks like crap. My chassis mods are: Tokiko(sp) drag struts, the 5 way ones, ebach(sp) drag springs, steeda double adjustable uppers and steeda aluminum lowers. Poly bushings . Competition drag shocks in the rear. I was under the car the other night and my bushings in the rear upper control arms are getting ready to come apart. They are pinched pretty good. Why would they do that. They have maby one season of track only use. Maby the uppers are binding, but why would they do that? Can it be fixed. I can put in new bushings, but if they are binding they will screw up again. My Drag struts and springs in the front dont seem to be getting the front end up at all. Are my struts not a good brand? Any body know about the quality of eibachs drag springs?. 1.975 60 ft on 28/11.5/15 et streets with 4.10s spinning with 11 lbs of air in the tires, smoke in 2nd gear.