I'm not positive about the Silverwing version, but the CX500 (same engine from what I know) needs a triple bypass somewhere between the 30k and 50k mark to have a good long life. That involves a new stator, cam chain tensioner and mechanical seal. All should be done at the same time since you have to open the engine for each one.
I have a CX500 engine on my shelf waiting to do them.
Good price now...until the cam chain tensioner wears out and eats the inside of the motor.
https://motofaction.org/motorcycles/honda-cx-gl/cx500-cx650-gl500-gl650-closer-look-cam-chain/