Nope, not that mark. Left exhaust mark will line up when the exhaust valve of the left cylinder is just starting to open - so you DON'T want to set the clearance for it then. You want 'impulse' lined up for setting the left side, there is no mark for the right side but it is exactly 180 degrees further from impulse (upside down impulse). Those marks come around twice for every adjusting opportunity so you'll have to pick the right one.
For instance, line up left exhaust mark and verify that the left exhaust valve is starting to lift on that particular go around or go around again where it will lift. Back up (ClockWise) the flywheel until impulse is upside down and parallel with the floor as far forward as possible. Set right side valves and rotate impulse mark in correct direction (CCW) past proper line up once and stop on second time there to set left side.
.022 cold and if it's too noisy you can cut it back .005 or .008 without too much danger. There is actually much more slack in the valve train that occurs some 30 degrees before lift off, but old timers seem to have troubles understanding and finding this slack spot and then there is NO mention of it in ANY service manual either - but it's still there. It contributes a great deal to valve train clatter on mine if I set it to .020 hot - so I don't. I run a little closer and quiet. As keepers of the flame, you youngsters should know about that extra slack spot and verify that it's there.