Hour meter says 607…. I’m thinking more like 6607!

7000 Onan completely disassembled now. Case has a bad gasket, total
misaligned gasket. There are no shims anywhere in the motor or any kind of a spring for a seal that I found on the EX side low valve cover both sides. What I did find is a 2016 date on the case and the trailer is 2004! So it was worked on/replaced.??
The intake gasket was also blown in the same place Jeff Jerome’s gasket was… must be a factor error?
The rings / hone / pistons and bearing surface look brand new. I’ll get seals and gaskets , back together.
What a learning curve!