1) For these push rod motors I always did what CSC recommended and set the valves as close to 0.07mm as I could get.
2) Easy enough to make a block off plate for that "exhaust/emissions port"
3) That "EGG" sometimes has what some consider a "Catalytic Converter" stuff inside it, the way the exhaust bends sometimes the only way to know is scope it with a camera or cut it open
4) I hear some "tics, hums, and warbles" when our bike is running, but these engines are not built to be "luxuriously quiet" after all, more like "Honda Type R" engines from the 90's... lots of random things you can hear, lets you know the C-Tech is working
but without actually hearing your engine I have no clue if those sounds are "normal" or not
7) Can't see the "counter balance" from the first pic you posted up, but I do need glasses for a reason
