I have a 6ft powerpole on a 22ft Gulf Coast. Not sure what series it is. I think it is an 07 or newer based on the 07 date on the pump. I would say it struggles to lift off the bottom 20-30 percent of the time. I have to rock the boat or assit it with a rope to get it to raise some times. Other friends who have power poles say this is never a problem for them. I have check the fluid and the level is good. What could be the problem? Thanks