Just cleaning the valves and seats on the bike, removing them one at a time. I noticed one of them needed tapped with a hammer to get it out. (#1 cylinder). After the springs were removed the valve is tight in the socket so I removed #2 valve and that runs free in #1. The #1 is tight in #2 so I am guessing I need at least one new valve.
Am I correct with my reasoning?
When the bike was running last week there was nothing wrong with the firing on #1 however, I don’t want to ‘force’ the valve back in if it is a sign that the valve may not function when the bike is running. I did run some 400grit sandpaper over the stem to clean that up, it did not make any difference to the tightnes of the fit.