2500 rock flex disc repair suggestions.

Hi Everybody, been a long while since I've posted, but I am looking for suggestions.  I bought a 14' 2500 rock flex disc last fall on an online auction.  Claimed it only needed the bearings replaced in one gang.  Long story short it was put together missing a half spool and they ran it loose long enough to really do some damage.  I need one bearing housing and three bearings which I can get from Agco.  I can also get the half spools from agco.  My biggest problem is the rock flex disc's used back up washers behind each disc blade and I am in need of 5 of those, no longer available from Agco.  My full spools which are supposed to be the 9 inch spacing are also quite worn, I can get them from Agco as well, but I really can't justify over $200 a piece on them.  Wondering if anybody had ever fought this battle and found a way to get things fixed.  The closest thing I have found to match the spool is the spools from a JD disc which are reasonably priced aftermarket.  They have a concave washer welded to each end of the spool.  I also have 5 disc blades that got the hole wallowed out.  The best part about this disc is that I think the disc blades were replaced not many acres ago, so a few new blades shouldn't affect it's performance.  My thought was to replace these and try to make the back-up washers I need from my old disc blades.  I would have someone try to cut them out with a plasma cutter as long as it won't affect the temper of the metal.  Also open for any other ideas, or if someone would happen to have some of the back-up washers laying around and would want to sell that would be even better.  Thanks

I think it will be a nice disc, but I will have more in parts in it than I paid for it unfortunately.  Also looking for a few scrapers if anybody might have some, I know of someone who has a bunch of used from a 2300, but they are different than the 2500 according to the parts book.  $100 a piece from agco for scrapers.  

Ive got some 2600 parts if some of those would inter change. I know i have some spools and maybe washers

looking at the parts book, i think the 2600 used bigger gang bolts, I really only need 1 spool and will probably just bite the bullet and get that.  Could see what you have for washers, they might work, even though the part numbers are different maybe I could make something work.  

So the back up washer is a concave washer that's probably 6 inches in diameter that sits behind each disc blade next to the spool.   I think they were only used on the rock flex discs.

Got er all fixed up, hopefully it holds together.  Made the 5 back-up washers from the bad disc blades I had.  Had the gang bolt welded up and ground back square, and replaced one full spool that was really worn with a new one. Got plenty of $$ into this project but I guess it will be a nice disc to use occasionally. If anyone had an extra furrow eradicator laying around I may be interested.  This one has one on one side but not the other.  Thanks.