i just got a set of progresive adjestable strut kit and had to put them on by my self. it took me an hour to come up with this but once i figured it out it took only 5min to change spring. i put some tape at top of plastic spring cover and slid a trailer wheel onto plastic spring cover it was a perfict fit and just pushed down and pulled retaining washer out . after parts excanged put trailer wheel with spring cover still in hole and pushed down and slid retaningwasher back in place, done. i hope this helps somebody. FISHY 650