Doing my first valve check 2002 M620 ie, 12K miles. I just measured the opener and closer clearance on the vertical cylinder and everything seems to still be within spec. (opening clearance 0.00 - 0.20 mm closing clearance 0.05 - 0.15mm) Is this common? I was under the impression that things are usually off a little. Am i doing something wrong or am I just very lucky? I'm using Ducatisuite and a Haynes manual for reference. I'm going to measure the horizontal cylinder to see if it's the same.