Power tube tremolo pot failure precaution

[BrainDeadAmps]

When using a Princeton style output tube bias tremolo, I was considering wiring a large resistor from the wiper to the ground lug on the intensity pot.

My thinking is that is would act as a backup ground reference for the output tubes in-case the pot fails, the same way a resistor is added to post phase inverter master volume pots.

cheap protective measure or any reason not to?

[pdf64]

Good idea, I don’t see a downside 

[sluckey]

Do you have a cathode biased PR? All I've ever seen were fixed bias. Either way, still a good idea.

[BrainDeadAmps]

Thanks for the responses guys!

Sluckey, the amp I’m currently building is cathode biased.