We had a similar issue with the in-mast furler on our Taswell 43.....it never jammed going in, but about 2 out of 5 times it would jam coming out. We found no good solution for several years...until 1 time it jammed completely and would not go in or out. We finally got back into port (Athens, Greece), called a local rigger, and he discovered the bearing in the upper swivel had completely frozen! He replaced the bearings, and we have not had an issue since, now some 9 years later. May be worth a check?