So I went back to the track equipped with the Dunlops and tyre warmers. Here's the entire story
I started out the first sessions with just getting a feel for everything. The dunlops are so much stiffer than the M7RRs. I now get what they say when they mean that race tyres don't move as much. The tyres were rock solid and felt consistent through every brake, turn and acceleration. That was really confidence inspiring. Instantly I felt that my previous personal best was just far too slow and the pace did not dignify these tyres, they wanted more.
More I gave them! After making sure I felt comfortable with all the new impressions, in my 3rd run, I simply started to go into turns a lot faster and upped my pace by several seconds. By the 4th round I was down to 1,15.7 (compared to 1,19.1 on M7RR). It felt GREAT! I was scraping my knee for real now, not just nudging the ground, I mean getting the knee down and then getting the bike down a little more. That was a lot of fun!!!
Then it started to go downhill... I was basically fearless and had a godlike confidence of slowly increasing my pace even more, until weird things started to happen. The rear didn't want to give me more. In the 5th round I was first about to low-side, and a lap further down the line it almost through me overboard in a smaller high-side. I didn't understand what was happening at the time, so I just slowed down. Next round it happened again, and I got a sense of what was happening. When enginebraking in the second part of a double right-hander the rear was stuttering, and it was doing the same thing when coming out of a tight left-turn. Didn't feel good at all, but at least I knew what feeling to avoid. It still haunted me more than I'd like because I didn't understand why it was happening. The tyre should be able to handle that.
I now decide to leave it all and just focus on what I'm bad at, left turns, and try to achieve the same good feeling I have in right turns. After a couple of laps, I go down.
I ask one of the better guys at the track about it and he comes over to feel my bike suspension. He instantly says the rear is way to soft and his theory is that I must have squatted the suspension until it lost its function. I bought his thoughts, since most corners are banked and heavy on the rear. Add to that, that I have mixed with my rebound and put it at 2 clicks. So my final conclusion is that in combination with the rear compression being too soft as well as my rebound being too fast. The effect I'm blaming it on is that the rear squatted and lost traction, and the rebound was too fast in recovering that and hence I was feeling the stutter I described above.
For day 2 I just focused on getting back on the horse. I set all suspension settings to the dukes recommended sport settings. Didn't get back to my best times though, but close enough. I at least found the good feeling at low 1.17s in the end, and I'm happy with that. I'll get back to to getting to sub 1.15 times later this summer and test out the suspension theory for real.
Final thoughts about the tyres:
The front tyre was amazing. It handled everything I threw at it like a dream. I was like what more can I do to you before you say no??? Rear tyre was awesome coming out of corners. I never had that good of a feeling when accelerating out of corners, it was fast and really grippy. I highly recommend these tyres.
Also did a stupid ****ing thing and burnt my tyre warmers in the first session. Don't leave them connected in, they burn themselves up. I'm still pissed at myself for not reading the manual. They are functional but pretty melted in some places. I blame it on the stressful morning.