One of the problems associated with the round barrel loop frame Guzzi’s is the notorious chrome bores, I guess they thought it was a good idea back in the day, but time has not been kind to this idea, and the chrome can flake from the bores, and destroy a motor in no time. So the answer is easy, just fit a new barrel and piston kit from Gilardoni, these are Nikasil lined and have no such problems.
I changed the barrel on the left side last weekend, but have had a niggling doubt that I fitted the oil ring the wrong way up. So today I again pulled the left side down to make sure all was well, and of course it was, so I then put it all back together, and torqued it all down tight.
The other upgrade I have been doing while I have the bike on the bench is to fit a new Alternator upgrade kit from Scrambler Cycle in the US. This comes complete ready to fit and is way lighter than the original generator assembly.