I'm gonna do it, rebuild my carbs with a kit. I have a Selco manual, a carb kit on order, and a 90's Yamaha 60 HP Motor (3 cylinders). Do I need a vacuum gauge for this? I took the carbs apart a few years back and gunked the heck out of them, and it worked for a few years...but now I'm going to do a complete rebuild.<br /><br />If I remember the carbs, there are not a whole lot of settings that can be adjusted, just the mixture screws on the top..and I think the book says turn them out 1.5 turns or so. Can I get by without the guages?