What are folks using for the MT propeller extension for the standard Vans cowl? I am assuming that I need a 2.250? spacer since that is what came with my kit with the FP Sensenich I sold for CS MT. My cowling was already rough cut and fit for the Sensenich from the previous builder and I don?t want to buy a new one unless I have to or there is a compelling reason to go further out with the prop. Sabre the recommended manufacturer source for the extension?