I just replaced the belt on my 914A MMM 72" deck. The last step is to adjust the tension on the spring so the spring length is 5-9/16". With the adustment arm extended to its fullest, I'm still over 5-9/16". I bought this tractor used so now I am wondering if anyone else has run into this issue or if the previous owner put a different, longer tension spring on this mower. Any input?