Greg, due to file size limitations I cannot easily send you a copy of the Carefree Slide Topper manual but if you provide your email address by P.M. I’ll forward it directly.
Essentially you measure the length of the slideout, front to back, if 47 inches or less you use 11 winds to the spring with the slideout in.
Four feet to 13’ 11” it's the length of the slideout box in feet plus seven winds and if the slideout is greater than 14 feet and up to 16’ 4” you'd wind the spring 21 revolutions.
Example: Box length is 10’ 4” wind spring 10 + 7= 17 turns. Always round down to the nearest whole number.
Bob
enotsbob@gmail.com