It seems more like it wants to add 4 or 5 degrees over 3k. When it was at 35 to went to 40 when it was at 34 it went to 38. I'd bet if it was at 30 it would be 34/35 and 38 would be 42/43. I have taken it past 3k in the past and it never jump up like it is now. Cold and hot is subjective... I let it get a little temp (120ish) before giving it a rev tune and checking it (that's what I'm calling cold) Take it for a drive, gets up to 180ish and recheck it and that's when it jumps the extra 4 degrees. It runs great, no pinging or anything. I get the two stage spring idea but if it its locked with 18 degrees would that limit the max on it? Here is a picture of how to adjust it.