I've been working with my new treadle that belonged to my mom. It's a singer 66 which runs really good. Got it all cleaned and oil. The only problem I have is the actual treadle. It really seems to be bouncing more than it should. The videos I've seen of them running doesn't show them to bounch as much as this one. Is there a site on the net that has any info on the linkage. The manual said something about bolts being lose but I can't seem to find any that are. Does anyone have any advice, I really want to get this thing running.