I'm looking for parts for an allen datgraph i-tech 536 gts. I haven't found anyplace that sells parts for these, ADSI sells sort of what i need, but lately I haven't been able to get a hold of anyone. I'm mostly looking for a new set of pinch wheel springs, there are 8 (eight) springs on mine, three of them that just don't return to there original size. If anyone can help or even point me in the right direction i would be really grateful.