[dusterfinland]

I run 74 duster in ss/ja 360cid here in finland,.I have problem all the time with accelerate pump seal ring i have use blue and orange rubber,.When it gets race fuel it goes fat and after that wont work at all,.same times cant get engine runnin before I take the thermoguad at pieces and change the rubber,.here in europe we run unleaded racing vp fuel could this be the problem..thanks