Grumpy,
I wish I had come across that information earlier. I am a very careful person and I tried every way possible of fitting that thing straight with my hand first, it was shiny clean and lubed lightly with 2 stroke oil. But it wouldn't go anywhere, it just didn't fit and less straight. I just happened to see a pro technician in a video smacking it with wood so I made the mistake of copying it.
So when I get the new piston and I follow your procedure, if I still can't fit it in with my hand, how should I heat the piston?
BTW would it be a karate-style blow when you mean the side of my hand?
