What issues you having? A 5' rotary cutter with a couple hundred lbs of crap 5-6' back on the tail could barely keep the back of my
L3200 diwn. My new
L4060 however is almost stable at max lift (pushing a ton) with almost nothing on the back. Any old impliment on there makes it rock solid. Both machines have/had loaded rears.
I've checked my hydraulic pressure & it's right. Loader is rated for 1,700lbs or so. My flail mower came on a pallet labeled 1,920. Add 200lbs for forks & some more for leverage with the load being a few feet out. I couldn't lift it mire than snow inch until I took off the PTO shaft & maybe 30lbs of stuff off the pallet. Felt rock solid stability wise with just my 5' LPGS on the back, maybe 700lbs.