Exploring the flywheel (Moroso?) having 130 teeth I found the steel surface (that contacts the friction disk) having a strange pattern. See pic.

With enough light it looks like cracks - but more than cracks these are edges from "smearing" the metal when friction disk rubs over it.

The clutch was not a problem before disassembling (I wanted to repair the transmission - I just took a look).

Is this normal for a used flywheel? Can i reuse it?

After all these years having a 440 I realized that this means having an attitude... and a budget.