Re: got a bad one here
Things always seem to start out simple and then go sideways.
When they go sideways, a leakdown test is a good place to start on a worn motor.
2 plates on, a couple pumps with a bicycle pump and check for leaks.
10 min tops, learn so much.
The KTM and Blaster engines are much more complicated, especially to install and remove. I usually leak test them before installation of even a new motor.
That's a mighty noisy bike you got there, it must haul a lot of ass?