I have a L5240HST Tractor with a LA854 front loader. I had front forks attached and was moving a log, I heard a sudden “bang” or “Pop” at this point I could not roll the forks up, but have no problem rolling them down. I have swapped all lines at quick connects they are all working, done a visual inspection for anything broken, and have found nothing. I swapped the lines on the cylinder to see if problem reversed itself and it did not. I am at a loss at this point has anyone else had this problem?