I recently purchased a L305DT w/FEL. Last two times I've used it the FEL response was slow until fully warmed up. Now I'm barely able to move the FEL when up to temp. The FEL is plumbed from the Oil Block Plate (left side under seat) which also feeds the Power steering assembly so I am running the FEL off of the tractor hydraulics (not a remote pump). I can feel slight hits or bumps when operating the FEL which (I Think) tells me I'm low on fluid. So here's my question. How do I tell the if its low on fluid and where the heck do I add more if needed. I have the Kubota owners manual (and pdf parts list). Manual has nothing (sight glass, dip stick, level check, fill plug, capacities etc) on the hydraulics of this tractor. Any Help much appreciated, Thank you.