That looks so simular to my cockpit set up phoenix. I may have mentioned that before. The problem is the plastic slugs they jam up on haul up. I suspect dirt and crud.
If I had a mechanical tool to polish and clean the inside of the slide it might improve the situation. But I feel lazy about that.
have inspected the old plastic lugs and they are blackish and gumby.
The replacement slugs made it a bit better! I'm over it.
I looked at electric winch option but it's not the weight that's the problem. And most properly make it worse or cause breakage.