Jim (jstanton),
Dunno if you're still reading this thread but I've just had an e-mail from Interlube International saying that they don't have a UK distributor for the Opti-2 oil.
I also found out this afternoon that you can't get Gator RC wing-tubes here anymore either (for the 'Ryans Rebel'). Well, one shop had one size left in stock - 48" x 1.5" bare ali version with phenolics... $60!
Thank the Lord for USPS!