Dump em out quick as the earlier valve had nylon balls and acetone will damage the plastic. Rinse em out with syringe and 50:1 mix the check to see if salvageable
Tis combination of stainless and nickel and is heat hardened at pinion bearing. They snap right above heat treat, just take right rpm and shock to gearing
Rectifier failed...bad terminal connection at battery if battery selector switch, bad cell in battery, loose battery connections, bad connections at rectifier