I’m new to this site but I’ve seen some other posts on here about SP370s that have been very helpful. My dad has had a ‘78 SP370 for over 17 years and he’s never heard it run. I wanted to get it running so I first cleaned out the tank which didn’t have that much rust but some really old gas. The I check ed the valves(they were in spec), set the points(they were a little off), and took off the carb to clean it out. The carb was pretty plugged up so I soaked it in chem dip over night and blew the parts out with air. When I put the carb back on, the bike started up on the 3rd kick. After a few seconds of reving it I tried to let it idle. It died and I couldn’t get it to start again. I’m stumped on what it could be. I have good spark, compression and the carb seems to be fine. Any ideas?