[Apex]

Well, thinking as a mechanic and as someone who has designed mechanical items in the past, a part of me understands why you should get them checked early.

Manufacturing flaws can come up and make it where the valves go out of adjustment early. But also, I know tooling is much more precise these days as well, so tolerances are much tighter than they were on older bikes. In theory, you should be able to wait longer.

I view it simply as a safety check. To just make sure it is all well and that some sleep-deprived assembler didn't forget to torque a screw to spec. Check it at 1000, then wait until the suggested time or a bit beyond it.

It really doesn't take too long. I started early one day, checked the valves, and had it back together by that evening. And that was my first time doing it. Sure it was a bit of a pain, but the peace of mind helped me as well (they were in spec). If I had the bike long enough to do another check, I'm sure it would have gone much faster.