I've had my Alpha hand climber for 4 years now and never had an issue. Took it out the other day and it started creaking when I sat down and stood up. I'm well under max weight and I have tightened the bolts that attach the seat to the square alum. tubing the strap runs thru. Anybody else having an issue? any word advise on how to fix this. It really is loud and all the deer in the area know where I am when I shift weight in me seat.