2011 S650 Bobcat Skid steer Quick Tach Not working properly.

I have a 2011 S650 Bobcat skidsteer. I broke a fitting on the quick tach and ended up having to replace the hose all the way from the back of the machine through the arm and to the front quick tach. Anyways after doing that I continued pushing snow for about a day, and when I wanted to park it I noticed that I couldn't detach that bucket. I parked unit inside thinking it might be frozen, but still didn't work the next day. Figured out that by bottoming out the hydraulics and pushing the detach button it worked great. With bottoming out I mean tilting back and holding it in that position while pushing the detach button. I can lock the quick tach without bottoming out the hydraulics but not detaching. Any ideas what that might cause this. Thanks

2011 S650 Bobcat Skid steer Quick Tach Not working properly.