I am the opposite having just removed Konis from my series1 and put on a Spax psx kit, will agree its a lot firmer even on the lowest damper setting(1 of 28), but in all fairness the Konis were not in good shape with 2 of the 4 leaking slightly still not bad for 8 year old suspension though. I am doing Donington on Saturday so will let you know how the new stuff performs.

PaulT