My 1980 Pantah was ,many years ago, in a head-on smash (not me) and while it stood at a shop, both carbs were stolen. I finally got around to rebuilding it (retirement is good) but the cost of Dellortos (retirement has drawbacks) made me search for something else. I was told that the pumpers were not necessary, so I have 2 x 36mm VB Mikunis. Has anyone had experience with other carbs on a Pantah? Any ideas on jetting?