I noticed that if I touch the power beyond connections, I can feel a sort of irregular vibration that I can't feel anywhere else on the tractor (so I doubt it's engine vibration being transmitted). I can even feel it if I reach further in and grab the rubber hose that goes to the PB fittings. Is this normal or do I have a looming pump problem? I also noticed the PB connections leaked a few drops of fluid (saw it on the backhoe platform). Thought this was odd since I hadn't disconnected/reconnected them recently and used the backhoe quite a bit this weekend without any leakage. I've got about 15 hours on the unit now.