We already answered the oil question.
We've moved on to the Unisys v. snail carb meter in Marshall's second paragraph:
Marshall wrote: "Want to buy one of those carb balancing meters. There is one that looks like a hockey puck and another that has a flat disk with a glass tube that sticks up. They are generally the same cost. Is one recommended over the other? My my dual carbs are EMPI 34 ICTs. Do I need some type of plastic cone to make that flat disk unit work?"