I am Having problems folding this bike. I have owned Dahon before this bike and never thought about folding at all, just did it. However with this bike it appears the locking pin where the frame folds is out of alignment with the hole it should fit into. This problem is becoming more and more of an annoyance. Downtube (Dr. Yan) advises to cycle the mechanism several times. This has made no difference at all. Any other 9fs owners out there having this problem? Any suggestion? This muddles what is an otherwise great product.