[Farmall] Paint for a Mower Deck

[Roger Moffat]

While this isn't for my Farmall Cub (it's for my Craftsman 42" lawn  
tractor), I'm certain the folks who hang out here will have some ideas/ 
suggestions/opinions.

What is a durable, "likely to last a while" paint to put on the  
underside of a mower deck?

A few years ago I sanded it down pretty well, and sprayed it with  
multiple coats of Rustoleum undercoat and then a black enamel. Some of  
this still remains, but a lot of it has gone now.

There are a couple of areas on it where the grass accumulates, and  
ends up becoming a large festering "glob" that has eaten into the  
steel. There's not a lot of movement there since these areas are  
outside the range of the blades.

Thanks for any ideas. (apart from getting a much better mower - a ZTR  
of some kind is on my wish list <g>)

Roger