Torsion Bar Boots???

I had a set of them that I couldn't get to fit over the ends of the torsion bars. I tried putting them in boiling water to soften them up but it didn't help enough. So then I tried to microwave them (a mistake) and they began to distort. I ended up putting my old rubber boots back on. There wasn't anything in the instructions from ENERGY SUSPENSIONS to explain how to install them.