JD 265, Warning to Kawasaki Single Engine owners!

I thought this was only a Kohler engine problem, but to my surprise!
My JD 265 with FC540V Kawasaki engine wouldn't start today. Didn't fire at all. Ran flawlessly yesterday. The first thing I checked was the choke, Bingo! The choke plate was out of place and one of the brass screws was missing, the second screw is 3/4 out but still holding. I can see that the missing screw is not in the intake, so it has gone into the engine.
I pulled the plug and scoped the inside with my cheap amazon computer bore scope. Couldn't see the entire piston crown, maybe 75% or so. Looks good to me! Can see several spots where the carbon has been knocked loose, doesn't look serious. I will replace both screws and just run it. Probably lucky those weren't stainless screws!
Does locktite work for brass into steel? Is there a better way to secure these little devils?
Thanks,