Hi there friends
Checking my bike I found some attrition points.
1.- On the oil hose, from the radiator to the engine's bottom. The pipe touches the water radiator and abrades the plastic cover, even it scratches the metal web

This was solved reorienting the pipes in the engine side, to get some extra milimeters and avoid this issue. I softened the water radiator edge too.
2.- On the exhaust valve steel wire. The frame touches the wire, and abrades the wire's cover

Not solved yet (just put a plastic tape) but in my opinion, bending the support spring to divert the wire from the frame will be enough.
Please, see the pictures attached.