The wife got a Husqvarna with a 48" hi vacuum deck, and the damn thing is the same way. No matter the condition of the grass, it's a guaranteed three to five gallon bucket of grass every time we cut.
Granted, our lawn is a mix of grass, clover, crab grass and a little alfalfa for good measure. But I ain't spraying a couple acres of "lawn" with all the shrubbery and flowers in and around. Plus it just wouldn't be practical...
No problems with my old tractors at all. Lucky if they need cleaning three times a mowing season. Those decks are flat, and don't have all those humps and nooks and crannies to hold the "grass". I tried all types of blades, and the ones that work best are the ones that the wing is all worn off. No lift!
We tried the Pam thing, WD, silicone spray, and nothing helped. I think it's the moisture in the clover along with the hi vac deck that's holding the clippings, so you maybe in the same boat....
Good luck
