Agree! Right now I’m just keeping an eye on the performance bottom end of the slope to ensure btu input/loss match up at that end. Softly softly catchy monkey!
Only remaining issue I’ve note is tendency for thermostat to short cycle boiler (15-20 minute runs then start again in 5 minutes) in evening as temperature of day starts to taper off.
A 15-20 minute burns at a rate of 3-4 burns per hour isn't a short cycle, and nothing to be concerned about.
Outdoor temperature reset is an imperfect load-matching model, and truly continuous burns for days or weeks are rare. Things like solar gain, wind-washing adding to heat losses affect the model, so some amount of cycling is perfectly normal, even when the ODR curve is tweaked pretty finely.
Efficiency & boiler destructive short cycling would be something like running 1.5- 2 minute burns with half-minute off times 2o-25x per hour. That's the same duty cycle for the burner as the cycling that was described, but with an order of magnitude more ignition cycles & flue purges.