The newer engines have gone to a collet on the crank rather than a keyed driver, so there is no mark.
The alignment mark on the cam gear should be as close to vertical as you can get. Since it is off slightly, run it to the advance side and you should be OK.

The mid range problems are either regulator, throttle barrel or both. Depends on the particular engine. It has been a problem on a small percentage, I'm glad for that at least.