Aksnow, As Operator4100 said on a Manitowoc you deduct ALL cable below the boom tip whether it is being used or not. Whats the serial number of the 41? Hope you have a lube chart, hate to see something burn up. Kind of embarassing! Thats one of the problems today, people learn to run the cranes but nobody teaches them how to maintain them. A friction crane requires a lot of T.L.C. There is always something to do. Have a good day.