Hi guys. I recently bought a 2012 kubota M135gx from the original owner. I replaced the quick couplers on the front loader remote so I can be compatible with my skid steer. As soon as I activated the front remote for the bale grabber I noticed neither my front loader or my 3 pt hitch will operate. I believe I have air in my hydraulic system. Does this make sense to anyone? I am not a mechanic so any advice would be greatly appreciated. Thank you. Mike Ahearn.