Order or make coaster plates, or stick marbles in the tubes that run to the fresh air valves on each head. If you do coasters, be sure not to bottom out the bolts in the heads. With coasters, you can yank those 1/2" or so hoses that run in a Y shape from the fresh air valves to a metal can under the seat area. That's really about all there is to it.
Yank the tank and carbs. Struggle with the big plastic air plenum and junk it. Pop pods on the carbs (there are good tutorials for getting them aligned and on correctly, takes about 5 min on once you get a feel for it).
As for jetting, check out my tutorial on that and the excel spreadsheet that calculates for you. You can go up to 3.5 turns on the screws, more actually, but if you get to 4 turns there's something else wrong like a partially plugged (white corrosion) carb passage.
Sorry, I don't have pics. I had a few videos up but someone got them taken down somehow. Must have been somethign personal, lol. Maybe even the guy who sells slide diaphragms... who knows.