That’s all I can figure I’m going to switch back to oem and see what happens. I own a outdoor power equipment facility for the past 40 yrs and have never not been able to correctly solve this problem on customers equipment. I’m straight out baffled I can’t solve it on my own ZTR….Not all blades will work with all decks
To me it is just a case of the wrong blades for your deck
Gators can be a bit touchy and seem to work better with pressed decks than fabricated decks
Air flow under decks is a very complicated thing
I keep some old used Gators for customers to try out some that the outer flute has broken off or have been sharpened to their safe limit .
From your description it just sounds like wrong blades
There is a difference between fits and works and obviously yours don't work.
No one here works for Oregon and Rivets laid out all of the common blade problems