Hi Gord where abouts in western Canada are you? Do you have a dealer close to you that sells A&I agricultural parts. I'm in Manitoba and use Harvest salvage In Brandon. All the parts are listed online with prices and are usually good quality they are Vapormatic mostly.
I pay online listed price plus shipping. some A&I dealers load the prices more than online. Our JD dealers will sell you a $350 A&I part for over $700. I run a repair shop and found that out when a customer wanted to buy parts himself through our local Deere dealer, so be careful.. I guess your super engine is the later one with the 2 O rings one bottom and the other at the top. or is your engine one that doesn't have the flame ring on top of the liner like the later ones do?. Regards Robert