I have had a golden eagle engine mount for a year and a half.I have this weird rumbling and grinding feeling when ever I speed up.I figured out that it was the axle being bent because of the extra weight applied to it.I have replaced it once from a steel to chromoly-(maybe steel) axle and it has become bent again.I would like to know if anybody knew of a metal alloy that can be used as a bolt in axle(not for sure about pitch,diameter size,ect.) that can flex with the addtional 35 pds of weight if going over small bumps or sidewalks without bending,thanks.