In addition to the Scubapro regulator mentioned above, you should consider the following two regulators from Zeagle:
1. Best choice: Onyx II Regulator - Zeagle
2. Envoy II Regulator - Zeagle
For the regulators you have, check with Sherwood to see if they still have parts for them.
1. Best choice: Onyx II Regulator - Zeagle
2. Envoy II Regulator - Zeagle
For the regulators you have, check with Sherwood to see if they still have parts for them.