I agree with Tom. If you put the clip up one you leaned out the mid range. EGT's show a trend not an absolute, the plugs say you running lean. EGT's can spike pretty quick if you hit a thermal or a bump and you unload the engine. I like to keep mine closer to 105 on my gauge and that seems to keep the plugs happy as well.
The magazine tends to go more towards the Expensive Aircraft Association but the local guys I find are a good group of guys. Most in our local chapter are not really experimental guys. WE have a few but the majority are just guys that like to fly and get together to have a good time. There is a lot of knowledge these old guys pass on and I kind of dig hanging out with them and listening to the stories. When someone dings a bird they are quick to lend a hand getting it home and getting it back in the air too with loaner gear, props, struts etc. I may not agree with EAA on a national level, but on the local level I am all about it. I am looking forward to getting out with the guys next weekend for a fly out clam dig adventure then roasting some brats on the beach and burning some air going out sight seeing.
Mine originally had the trim on the panel like yours. I figured out pretty quickly that on landing I like to keep a hand on the stick and one on the throttle. I moved the trim to the stick with a ray allen grip so I can bump it as speeds change and keep my hands on the main controls. I used it a lot more than I thought I would. Its nice having the PTT wired in as well so nothing is hanging down on cords to get wrapped up in.
Bob has put earlier model tanks in later model wings and vise versa. He had to do a little bit of fairing, but when it was all said and done the airplane didn't know the difference and all have flown well. The football tanks on the struts will get you another 10 gallons and the plane does not seem to know that they are there performance wise.
home depot... just about any hardware store.. I chucked mine up in a drill motor and used some sand paper to take a fraction off the OD so it did not squeeze down so tight when I was trying to put the pins in. https://www.homedepot.com/p/Everbilt-5-16-in-O-D-x-3-16-in-I-D-x-10-ft-Pre-Cut-Polyethylene-Hose-HKP003-PE004/303132505 I have a bunch of delrin rod that I could turn down on the lather to make bushings with too.
I have hauled a lot of stuff using a Jet Sled strapped under mine like Chris did with the kayak. Think I picked the last one up for under 30 bucks. I always intended to get around to making a swing mount for it to make loading and unloading easier but I never did.
I came close to crying for ya when you sent me the pics. Wish you were closer, I would give you a hand in the rebuild and get Dad back in the air ASAP. Of course, if we stay on this 4x4 schedule it would make it easy to do an extended trip up there and give a hand.