Dropped RJ off at work and while I was on that side of town, I swung by Airparts for a new nut for the mixture arm.

I think I mentioned it in a prior entry, but the silver hawk manual says very clearly that if you crack the torque on that nut in order to reclock the arm, you have to replace it with a new nut and torque it to 90-100 inch lbs.

I suspect that this is just some lawyering on their part, but I did as the manual states and ordered a replacement nut, which my local airparts had to get shipped in from their store in Florida. Over $5 for one coarse thread lock nut!

Anyway, I carefully marked the clocking of the arm by drawing a sharpie mark across the serrations, removed the old one, which was still locking just fine, thank you very much!

100 inch lbs is quite a bit of torque. more than I was comfortable cranking into against the travel stops on the fuel servo. So, I put a medium sized crescent wrench on the arm to hold it in position and then torqued the new nut down, ops checked for travel, then applied torque seal. One more little job done.

Something else I've been meaning to do for a while now: Figure out routing for the alt air and oil cooler shutter cables. First off was to determine what went where. It seems to make sense that that oil temp and mixture should go together, while the alt air should be within panicked grabbing distance of the throttle.

Once that was decided, it was time to figure out how to get the oil cooler cable from the right side of the sub-panel to the upper left side of the engine. I won't bore you with the trial and error that went on, but what I ended up with was punching a firewall hole next to the throttle cable passthrough and then running the cable parallel to the mixture cable all the way to the lower starboard dynafocal mount, where it then sweeps upward to eventually connect with the butterfly valve that will eventually live there.

I also took a bit of time to start looking over the behind the panel stuff with an eye toward trimming errant zip tie tails, installing standoffs or chafe protection anyplace I might have missed- stuff like that.

While I was doing that, UPS showed up with a bag of white adel clamps I ordered a couple of days ago, so I can get back to routing stuff on the right side of the engine in a day or two.