Dont and I mean dont take the main spring off unless its broke.I got a parts kit and spent 1.5 hrs and lost 2.5 fingernails getting one onto the cover.Finally managed to pull most of the spring on an hold it with a small punch then swore my head off and pulled it on the rest of the way.Its a ##### to say the least.If theres an easier way I would like to know.Dave.