I have had the EZ down on my '09 RAM since I bought it. Second thing I got for the truck. Best thing is when hands are full, akward position, etc., just a quick handle pull to release the tail gate and - it just EASES down
and no banging, it would just PUSH rather than WAP some little monster on the head
(maybe they would need that once, just to get the idea to stay away from tail gates).
Heat in FL has NO effect on operation, even in MN the cold was not affecting the operation (except for MINE). (Born there, left at 21, never going back, again).