Hi, I 99% certain the comp gauge is right, but I will double check it.

The car has been sitting for 3 months since it stopped running.

The comp numbers just don't make any sense to me, that's why I asked if anyone might have seen a similar problem as I'm new to the m104.

I have a m103 in a 1989 300TE that has 480,000km on it and when I replaced the head gasket 20,000km ago (because of oil leaks) you could still see the cross hatching in the bores. So I'm surprised that the bottom end on this m104 would be worn out.