Bandit 250 engine, valve lapping

Because bowling was completed, I perform the lapping of the valve.
I removed the valve and observed the valve face and valve seat.It is receiving damage.

This is a valve seat.

This is the valve face.

I attach a valve compound and do lapping.
The sucker is called a valve octopus.

There are 16, too.

I completed the work in a few hours.

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