I am attempting to replace a broken lift cable on my 1991 Coleman Laramie camper. I've downloaded the lift repair manual and have all the necessary supplies and tools. But now I am very confused. According to the manual, I have a 1991 Americana series which requires a 52" pole for support and adjustment. The raised height of my good corners is only about 50.5". Even trying to shove it, there is no way I can get these poles to fit. Verified the proper position (body rail and weatherstrip mounting), I know it's a Laramie 'cause it's painted on the side. I was confused on the year, though. My registration says 1990, but the VIN breakdown has a year code of "L", which is 1991. Either way, I'm stuck on the first step, which is not good. Any advice???