I took my ex-21 scroll saw in there to get it fix will it been fix for about 35 days and now it is doing the samething when I took it in on 7/12/2013 it got that knocking noise again. Whatever you do don't take your scroll saw or any power tools to acmetools stores anywheres. They sucks. Now I have to ship it to ray to have all new guts put in it. I think acmetools should give me a brand new saw with full lifetime warranty.
Whatever you do don't take any power tools to acmetools..