what you mean is your not strong enough to put it back on,you need two people to refit it,what you do is to join the spring,fit it on the bottom lip of the tsg,get two small screw drivers,ask some one to hold the spring in place at the bottom of the tsg(sorry what you call the door boot)the place the blades carefully under the spring as you move up to the top guiding the spring into place
mm, April 2013