I would call your local dealer. Even if you have them ship to you for convenience, shipping is apt to be less because of distance. Plus, you are supporting the local guy if you need them in the future.
They are all the way across the country for you, but this is the best I've found - they have the part diagrams, part numbers and prices on line and they ship very quickly. Forum won't let me post a link, so google "MBtractor".
I'll cast another vote for building that relationship with your local dealer if they are at all competitive. It's good for both of you so I would at least talk it over with them.
I'm in the same general area as winesalot.
An hour long drive up in Our parts can get pretty hairy in the winter!
The local dealerships up here are way less than competitive and very un-inviting.
I have all my parts shipped in, I use Coleman equipment, they have always treated me right!
I agree with RMD, I use MBTractor, their prices are good and shipping is fast. the direct online site is //parts.mbtractor.com, doesn't cost anything to look, check it out.