Back in '75 I worked for Honda. Rumor was they ran 148mph. on a Japanese test track. I had one myself in '77. I put an electric fuel pump on mine. It made cold starting a lot easier. There are a couple of good sites explaining that mod. A guy on the net called Randak (? spelling) is a real Guru on those things. He sells a lot of upgrades for those old wings. Those carbs can be tricky, unlike other import carbs. and he explains it all quite well. Check him out.......Tom