Mike
You've done enough hacking on the poor motor. Take it to a Honda shop
and let them do it right. The valve stuck for a reason and you don't
have the tools or knowledge to correct the problem.
Joe
Mike,
You have a fairly new honda, in my opinion this should not happen.
Hondas have a reputation for being almost bullet proof, which is why
they cost so much.
There is a saying that goes something like "if you accidently kick a
honda while walking past, it will start"
I would start by making a fuss about your Honda to the manufacturer,
maybe they will do something for you to help preserve thier fine
reputation.
Just pull the head. It won't be as bad as you think. Do both valves.
Hank