Gnarly, the closer it is the to left side of the specs makes it tight, as that's the tight end. But I do agree with you. The first 20 minutes are extremely critical and can make or break and engine. After that you have to get the rings seated in ordered to decrease the oil consumption. I follow Engnbldr's way and found a long hill and hit it at 2k rpms and went all the way to 4k at WOT. I did that a couple of times and it helped the engine for sure.