Juice, this is part of a post on a similar question.

Remove the gear from the plane completly and verify that it works correctly. Once confident that they are working correctly continue.

Now reinstall the gear tight, recheck the bind. If it is still there loosen each screw by one turn. Does it work like it was free of the plane now? If so remove each screw and count the turns. Remove the retract unite and mix up some filled epoxy, this can be regular epoxy with microballoons, or sig epoxilite, or any one of a dozen. Amply cover the mounting rails with the stuff leaving the mounting holes open (free of the stuff). Then take two small peice of platic rap and place it over this mess so that it completly covers it and drapes down into the cavity where the retract mechanisum will be. Replace the retract mechanisum and tighten down the screws the number of turns you counted as you removed them. The screws may give some dificulty going through the plastic rap so dont be afaid to use a sharpened, or heated pushrod wire to punture the plastic. Once everything is buttoned up set it aside for 24hr.

The next day remove the retracts one last time, trim all the extra gobs off. I like to leive the plastic rap between the epoxy and the mounting ears but remove it every were else (having the plastic rap as a barier garentees I'll be able to remove the thing in ten years). Tighten the gear back down tight and it sould not bind now.

Good luck!