I have a Fox (looks like a Brison) 4.2 that on the last flight lost most of it's compression at TDC.
I first checked the plug and all bolts.
Today I pulled the head off and rings look fine and cylinder wall is slick all around.
In the bottom of the case I did find with my finger a couple of flat microscopic 1/8" long pieces of metal???
Would this be chrome liner??
Is it possible to fail like this from going from high compression to almost nothing?
Engine has five-six gallons of fuel with no problems.
I am running 40-1.

Thanks
Jim