Control on one burner would heat on high only, not lower heat level

Bought new version of control element (parts no longer available for the old one) and luckily had a sheet with the oven describing how to disassemble the cook top from the range to get to the old control. After removing the top and installing the new control element, followed the instructions backwards and reassembled the range. Total job took about 4 hours. A real serviceman could probably have done it in 2 Hrs.