I got to mess with it a little this evening. With vac line disconnected holding it at 2k rpm it barely moved to about 6-7 btdc. On idle it was at 5. With the line hooked up it's at 5* btdc. Holding it @ 2k rpm it was at 30+ btdc. Even after it warmed up really good it still tries to hiccup and backfire thru the carb. I feel like its advancing way too much.