Sudco part # 002-079 310-637-8330or Niche Supply on eBay (I've ordered a lot of small parts from them.).http://www.ebay.com/itm/Mikuni-Spring-Seat-Plate-VM26-606-VM28-132-6-/160897983145
Got it ordered and on the way. Flanders is sending me 2 of them, in case I lose another one... lol. They did not ask for payment. He said, just send him a check for $2.26 when I get a chance. Excellent customer service. Thank you very much.