Based upon the picture, yes it looks like the R and L magnetos are timed at about 28 deg BTDC. New magnetos, with new points and cam actuators tend have a bit of timing drift over the first 25 to 50 hrs due the contact areas wearing in. Pretty normal. Some magneto overhaul facilities put a tag on the magneto that states to check the timing after the first 25 hrs. Adjustment is easy, loosen the two hold down nuts for the magneto and adjust as needed. I always do the RH non impulse first, then the LH with impulse, but that is my opinion. Loosen the nuts just enough to turn the magneto, but not so loose that the drive gears get sloppy meshing, which affects the timing adjustment. Re-torqueing the nuts can change the gear mesh / timing slightly, always double check. Remember to take the gear lash out my turning the prop about 30 degs beyond the timing marks, then in direction of rotation to the timing marks.
