Mark,

The lobe does not have to be EXACTLY on the heel of the cam, I believe about 30 degrees either way, maybe more, gives an adequate reading.

Good luck,

------------------
Larry Bible
'01 C Class, Six Speed
'84 Euro 240D, manual, 533K miles
'88 300E 5 Speed
'81 300D Daughter's Car
Over 800,000 miles in
Mercedes automobiles