I have found that wet grass will stick to ANY/EVERYTHING....no matter what.
Things like slip plate help, but in the end, nothing stops it.
If you clean with water, clean all the way every time you get it wet. If you clean with air, plan on scraping every so often.
No good solution but ongoing maintenance.
But....things like Slip Plate do help...
Using air to blow off the top of the deck every mowing makes a huge difference.....only corrodes from one side, not both..