How did you confirm this.....post some pics of the piston and cylinder walls.....Seems the lower cylinder has gone bad
I did not investigate personally but I DID have a guy use a bore scope . The bottom cylinder is very tight . When I can I will pull the head ,I do have a head gasket . A hone ,piston and rings ain’t that hard . I did buy another boat. But still love my Bayliner and Force 85 . 25 years reliability.Could be as simple as a blow head gasket.----No point guessing.----Open your tool box.---Start investigating.