Steve, At the beginning of your post you mentioned "Old Smokey," later on you said that while on the phone with tech support they had you check the knife and selector motor. So I'm assuming that you actually have an Amaya XT. If that's the case, try changing the needles on the colors that you were having miss trims on. Too many missed trims on the same needle can bent it, especially if after the trim the machine color changes over to another color several needles away. If this doesn't solve the problem then you most likely have a bent knife cable or selector cable. If its a non XT check your knife swipe. the procedures are in the Tech manual supplied with your machine software. Hugo Torbidoni Melco Tech ************** Biggest Grammy Award surprises of all time on AOL Music. (http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp00300000002548)