Removed all terminals and block mounting screws. Repaired one burnt terminal and reassembled. Replacement part was an exact fit and reassembly whnet very well.
Lifted range top, disconnected and labled wires from old switch, removed old switch, replaced wires on new switch, installed new switch. NOTE: Local appliance store informed me that the electric cooktop was too old and that a replacement switch was not available and wanted to sell me a new cooktop for $795! I found the switch on PartSelect and repaired the cooktop. Total cost... UNDER THIRTY DOLLARS!!