The MAC operator is a tank compared to an MOVFR II. All the sheaves are on shafts with 2 pillow blocks and big bearings everywhere. The worst thing I can say about them is they aren't exactly a universal fit type operator. They work great on a Montgomery engineered cab but since the throw isn't adjustable there are a lot of mod jobs they were used on where the geometry was never right. I've heard another company makes an adjustable split link for that problem but I've never seen it.
