The only thing I'll add to Stan's and Mitch's comments is about the CB hexbar linkage.
I must have gotten two linkage arms made on a Wednesday. These are the arms that slide on the hexbar and contain the downlinks to the carbs. Mine are perfectly symmetrical, I have seen others that are not. Measure yours to make sure(this is important). If they aren't, you can either purchase a new pair or fill the holes with epoxy and re-drill the holes for the downlinks.
The friction Mitch speaks of is non-existent if you replace the ball ends and heavy springs with heim joints(pioneered by RS-60 Mark and I way back in 2006) and light springs. I believe in redundant throttle return springs, I have an extra spring on each side. Racecars have reduntant throttle return springs. It's good safety practice.
Cutting off the tabs on the air filter bases is how the heim joint mod is done. Mill or grind them flat and even. Then drill a hole and install a heim joint. A female 5/16" joint is the perfect height for a Spyder. A male joint and a couple jam nuts may be required for a Speedster, the hexbar needs to be lower to clear the alternator and shroud. I used a thin 5/16" ID coil spring and a couple washers to keep the bar centered. The spring is very short, when the engine is cold it is fully compressed leaving almost no play. Did you know that your engine is almost a 1/4" wider when hot?
On the hexbar itself, you have two choices. You can clean the hole, rough up a piece of 5/16" steel rod and epoxy it in. Or you can tap the hole and use a long 5/16-18" bolt with the head cut off.
Once the location of the aluminum arms is known to be good, I secure them with TWO allen screws. There are two threaded holes in each aluminum arm, one on each side. They are threaded 1/4-20, easy to get extra screws at the local hardware store. I remove the hexbar and drill little countersinks in all the spots where the allen screws touch. I also use some blue threadlocker on the allen screws when assembled. Engines vibrate things loose all the time, especially aircooled ones that occasionally plug idle jets.
I'll add some pics later today when I get outside.