Hi Mike:
We were not too succesful. The manifold that my friend got from KS was 30 cm long, in my opinion, not enough. Our first reading was 6.500, but not consistent, dropping quikly to 5.900 as soon as the pipe got hot. We only coud make a cople of attempts, playing with the PTFE gap. Next was 31 cm. Better, but not stable. 32 cm long: 6.500 stable and 95 ยบ, good but not enough because that is the same reading that with the pits muffler. No more PTFE was available, so I took the manifold to home to add 4 cm of steel tube, but we haven't tested it yet.
The wether today is not very good in Madrid [

] it's ranining ...