Mine is on a 2004 3100se and it has a tension arm. It was broken off when I bought the boat and was also missing a part called a stripper, I was able to obtain both parts and get the windlass working. There are some new part numbers and Lewmar was able to send me the numbers which I bought from a dealer called Crowleys near Chicago.
Hope this helps
I thought the same thing. But that is what the rep at Lewmar told me. Get this the spring, arm and mounting screw for the newer ones is only $10. Lewmar charges $152 for mine because it is a discontinued item. Thats total BS!