Disabled Generators Getting Tune-Up

I am trying to optimize my natural gas and hydrogen generators, since 5 kg lead  every 3 days gets pretty expensive.

Firstly, tune-up decay when the generator is disabled, while unrealistic, provides an interesting problem.  Correcting that would obviate the bug.

Secondly, my dupes are still applying tune-ups to disabled generators.  This means I would need to optimize by turning off full generator rooms, or rely on time cycling the generator station?  both options seen un-fun.

Further, the tuneup debuff time is good for how long tune-up takes to apply, and how resource demanding it is, but shorter on both would make optimization a much easier task, or if (as I began with) tune-up stopped debuffing when the generator goes idle.  The generator automation circuits need to be seriously predictive to correctly optimize, when tune-up applies for 3 days and is wasted when the generator is off.