Any advice on what linear door operator to go with on a Montgomery MAC door operator mod/upgrade? I am thinking I need to start getting away from the harmonic operators. I would like to stay with the original MAC door equipment. New hangar rollers, upthrusts, spirators, pickup rollers, lift rods, hooks, interlock contacts, gibs, clutch, ect. My concern is that the clutch dovetail is retracted off the long arm chain. I am kind of leaning toward the Otis Glide operator. We are looking at using the Virginia Controls MH-3000 controller. Any advice/wisdom is much appreciated. Thank you