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Now that was a race! Pogi! What a beast.

This is my personal apocalypse.  I don't drink booze, I don't smoke or vape.  Weed makes me paranoid and miserable (edibles make me trip balls in addition to being paranoid and miserable.)  I sure as fuck don't mess with any powder or pill drugs.  While I am a believer and advocate of the use of natural psychedelics for purposes of therapy and personal growth, I'd never do them recreationally.  Tapatio is my one drug.  Long term listeners may recall when I told the tale of driving to a Walmart Black Citadel Super Center in W.Mass to buy them out of Tapatio.  I've done that two other time, but not photographed it.  I did the math once and I went through ten 32oz bottles in 2 1/2 years, or about four per year.  I've had dozens of other brands of hot sauces.  Many are weak, some are insanely spicy (extracts are just dumb), and most taste rather bad.  Tapatio isn't the hottest of the widely available brands, but it's the best balance of heat and flavor. Vulture capital is the ruiner of all things good. I fully expect Tapatio to turn into something on par with Frank's Red Hot in the next six months.  I posted in the hot sauce subreddit and already people are panic buying.  I'm seriously considering buying a box of four one-gallon jugs and a pump (usually sold to the restaurant market.)  This is a nightmare.

Happy birthday! I miss that particular hangout. 🍺

Yes, dual opamp seems to be the way to go. Only changes to the old board are added opa445, opto coupler and three resistors to each bias servo. All operating point unchanged. So, I didn’t follow Kevin’s suggested servo in full. Now the new CFA3smd has been in service a week and I’ve made a few changes to the servos. Increased gain of opamp, increased current through the bias set trimmer and omitted opto coupler. Diagram shows the behavior for servo with and without opto coupler. I also added 7K and 1K resistors (to simulate R36 and RV2, see Kevin’s schematics) and got the yellow (opto+resistor) curve. Schematic showing the final (for now) servo.    

^Got a nice thermos bottle with NASA gravity fed flow technology engraved with the logo of my local bike shop / brew pub. 👍🏻