Yep, absolutely! That's the problem with egt's. Higher temps don't necessarily mean lean mixtures. There are no all encompassing "perfect" egt numbers. Every engine is different. My suggestion is to tune it old school. Check plugs after every run. Look at your timeslip, especially MPH. Tune it to make it run it's best, then turn on you egt and record the numbers. That's the number you want. It's your's and your's alone and will be of no use to your buddy. When I first got one I was told the number to shoot for was around 1350 on gas, normally aspirated. After leaning the crap out of it and loseing 2 tenths, I got there. Turns out mine ran best at around 1225-1250......anyway, lean it back to where you started, then lean it a little more and see what happens.