Hello!
I read a lot about the problem and still confused if it is considered 'normal' or in very bad shape.
The rattle is every stroke, but when I listen to video of any trials bike I can hear that same sound. (I never had a trial near been close to one, it's very niche sort of bike over here)
The engine has 160 psi of compression and start first crank every time.
Engine sound I recorded, I think it sound just a bit worse in video than on real life.
Thanks!