Joe, Welcome to the club!
I've bought some Saito engines from RC Superstore at a discount price and with good service. Try them at...
http://search.stores.ebay.com/RC-Sup...110024QQsofpZ0
Their website isn't currently showing an FA-40a but they'll be able to get it. The engines are new with the standard Saito three year warranty and the shipping is free! Plus they're cheaper than the usual retailers.
Harvey