I'm reviving a CL70 for a friend of the family as a favor (and a sacrifice of elbow grease to the vintage honda gods) and I've hit my first road block. The slide that rides in top of the carb that controls needle height (is slide the right term) is stuck quite solidly. I've hit it with a LOT of pb blaster with no success, so what's next? I'm going to try to heat it in boiling water and see if I can't get it to free up, but I don't have much faith in this solution. Any other ideas? I figure this has to be a common problem with all the old singles/twins that use this setup...
Zach