I have taken the loader on and off without issue several times on my one year old L4060. I had taken it off two days ago, and in trying to put it back on two of the four hydraulic quick connects will not go back on. They are the bucket curl and dump fittings. All of the valves are free on the tractor side but not on the loader side. I need to hook them all up in order to get the loader reattached. Loader is sitting on flat pavement. Thoughts?