His posted volumes are really low.
Stock volume is 42cc.
He posted: 45cc, 47cc, 49cc, 51cc
Running on applesauce?
I'm working with Phathead Racing.
He will have his version out soon with excellent dyno developed chamber sizes.
They do a 41cc dome and one thats uncut so the customer can do their own.
Actually for some reason your image hasn't shown and til I started to reply I didn't realise there was an image there.
I've signed into your forum (been a member for a while but mostly a lurker and not posting) and put that URL of that image into my address bar and this was my result.
"You are not authorised to download this attachment."
My guess is the image shows perfectly for you but nothing to me.
Oh and the subframe is fine, slight chain rub but every used KX 500 rear subframe I've ever seen has had that.
Not an issue and I know how to sort them so it doesn't get bad.