Thank you everyone for your replies. I would love to watch the videos, but I have a ancient pc and have no sound right now. NOW, what is happening is the shuttle carrier adjusting screw....if the carrier is adjusted in the carrier hits the cast body and if it is adjusted out the shuttle hits the front slide plate hard enough to knocks it off the machine, but it does not hit the cast body. There seems to be no happy medium where the carrier doesn't either hit the cast or the shuttle doesn't hit the slide plate. It is the correct shuttle. There have been thoughts of grinding the carrier and/or base so they don't collide. Does this sound like it could be out of time? Any suggestions and knowledge will be most apprecited. Newbie to this stuff (bet you can tell). Thanks all, Maggie