The belts don't need adjustment, so that's a plus. But the servicability is bad, as you say.

I had a '74 Shovel until July of last year with a Super B. Much more primitive than the E model carburator, but again, with proper jetting it was quite good.

You did have to know the procedure to start the machine though, since the B has an enricher rather than a choke, and I didn't have an electric starter. Here it is, just in case you run into one of these: Turn the idle jet out 1/4 turn. Two kicks with the throttle and enricher closed and ignition off. Two kicks with the enricher on and ignition off. One more kick with the ignition on would light it up. Then turn the enricher off, let it idle for about ten seconds and turn the idle jet back down 1/4 turn. If it failed to light up, you had to shut the ignition off and kick it through a number of times to clear the cylinders... not fun.

I also had a foot clutch on that machine. That alone prevented anyone from asking me if they could ride it.