Anyone here on the forum have an Excalibur scrollsaw that can help.mine keeps popping the tension lever.it seem smaller the blade the worst it is.run out of oppositions or what to do about it i check the upper arm that seems to be good.would it be that the bearings in the rockers be causing this problem?any help be greatly appreciated.i live by the alantic ocean soon going to give it a burial at sea and get another scrollsaw any Recommendations on what to get that will last more then 4 years