I've never been able to see the "D" or "S" on the flywheel of my 2004 V11, but have instead relied on the ability to spin both pushrods on the cylinder I'm working on to establish TDC before checking clearances. Well, today I got to the point where both pushrods rotated freely and I decided to have a look for these elusive letters. Didn't find them, but I did discover a faint but well formed engraved arrow on the flywheel pointing in the forward direction when I had the RH cylinder at TDC (pushrods easily spun about). I'm curious if anyone else has seen this, or is this some other artifact defining a different relationship unrelated to adjusting the valves?