I love my Fastfold but has anyone else had problems with thiers?? I've had mine for 5 months and so far both front wheels have snapped off and needed to be replaced. Today when adjusting ds in the seat something went pop and it's even more sling like than before. It would seem some stitching has come undone at the handle end but I can't for the life of me see how. I've tried contacting Micralite but without success - have I got a lemon or is this typical?