If the valves weren’t hardened Stellite I would have ground them
Link to an affordable seat cutter set
ACTOOLS 12 Pieces Engine Valve Seat Carbide Face Cutters 30, 45, 70/20 Bore Degree + *FREE EXPRESS SHIPPING* https://a.co/d/6JP8PRA
Link to the Neway kit I have
Rotary Cutter Seat Valve Kit Neway https://a.co/d/ecaX8jr