Has anyone had experience and success w/ seized fork tubes on this machine? I haven't dug into why exactly they aren't moving just yet, but I'm hoping several people may have also experienced this and have some advice or tips. My first assumption would be just general dirt and grime has worked it's way in internally and seized the parts, but I suppose there could be also be the possibility of a slightly bent tube putting everything in a bind. Is there a trick to pulling these apart if nothing budges with whacks of a rubber mallet?