I don't have the specs on the cam right now,but the shop told me it was pretty mild.What do you mean by degreeing it in?If it was one tooth off,wouldn't it backfire everytime I stepped on the gas?It's a random backfire.The engine idles pretty good.One tooth off can also cause the engine to stumble badly?You're right though.I don't think it's the carb.What should the approximate timing be?Any more ideas?