Well this is the start of the 4th year for using my snowblower. I was able to attach it without problems for three years. This morning I had a problem. I had the driveshaft assembly and thought I would spray some WD-40 on the pto coupling that attaches to the mid pto. I pulled the coupling back to try to get the WD-40 to work it's magic. The coupling stayed back and did not return to the regular position and it won't move. Does anyone have any suggestions as to how to get the coupling to return to the regular position? Thanks.