Ok one other question then. On my last flight I started getting the horn (at least I think this is the gear warning horn right?: peep peep peep peep..) as I was about to level off after my descent at 20" 2000RPM and Peak TIT for entry to traffic pattern. I started to enrichen the mixture and I started getting the peep peep warning and then I increased RPM and finally increased the MP by just an inch, maybe not even that, and the horn stopped.
How could enriching the mixture cause the horn to trigger. Per the service manual it's tied to a MP setting. I recorded my flight with a GoPro so I'm 100% sure about what I'm saying. I started enriching and mid way through the peeping started. Then I increased RPM to 2200, I can see the MP drops by one inch or so at this point and then I increased the throttle by a smidge, somewhere between one turn and half turn, and the peeping stopped. Does going richer from peak TIT somehow decrease MP? I guess if I enriched past best power to the richer side, power reduces and so less suction means lower MP? Is that what happened? Looking at this:
I would have needed to go basically full rich to be at a lower power output mixture than peak TIT. This is really confusing to me.
If someone can confirm that peeping is the gear horn, and how enriching can trigger it that would be great.