K all, need some input on the ??? roof raising issue. I recently purchased a used 2014 FOREST RIVER FLAGSTAFF MAC BR28TSC (toy-hauler) Noticed that when I'm raising the roof w/the pwr winch after I have the unit leveled, that about 1/2 up thru the roof travel.....it starts to bounce /jerk up/down then it stops when it gets to the roof max height limit? If I stop winching. It stops bouncing? Now the bounce/jerk isn't violent.... just a little unsettling. When I do get the roof raised an in place I jam in the safety bars asap. It's done this from day 1 when I picked it up in late June. I've greased the cable fitting underneath, oiled/lubed the lift arms - cleaned then used graphite on the winch system - no change? (well it goes DOWN a lot smoother) To me... something is sticking/binding a bit, causing resistance, but I'll be damned if I can find it. That or I have a bent lift spring somewhere. ( I did buy it used from a dealer who didn't have a CLUE about pop-up campers) I will add that my old hand-cranked my old '96 STARCRAFT 2106 12yrs ago...it too had a tendency to bounce a bit as well - AFTER I installed the roof A/C unit At the time I attributed that to the small lift springs/arms and the added weight. Now my 2014 Fleetwood w/A/C is doing the same thing. Mind you it's a much bigger roof and I am using a pwr winch (no I haven't tried cranking it by hand - I'm old and broken....) Any thoughts? Thanks.