I'm installing some new springs on my blazer and all four bolts are rusted to the bushings sleeves. After about 2 hours I gave up with trying to get the bolts free. A fellow club member dropped off his cutting torches for me to use (Acetylene), so I guess the question is, what settings should it be on? Whats the best approach? Should I cut off both ends of the bolt and try to let the spring fall from the hanger? As you can tell I've never used a cutting torch so any guidance is appreciated. BTW.. Anyway to salvage the spring bushings when cutting the bolts out? I have someone buying my old springs from me.