[TerryH]

Arlen---If I was just touring, I would probably use the 33%, but in my opinion, and that of many others, the 26% is a good compromise for all around driving. Tom Endy has one of his Model A's with a 36% (if I remember correctly), and he told me it was higher than he liked. Like almost all Model A items, whatever works well for you is what you should use. Others think a well running Model A doesn't even need an OD at all.