Aaaah yes, I remember how your wheels helped you improve. What I found strange about that improvement is that it wasn't a quantum leap when you fitted the new wheels but gradual and incremental over a few weeks. I suppose it took the wheels a few weeks to get used to the new bike?
second effort on club 10 TT took 2.09 off my time, down to 26.33.
I didn't actually fit them untill I had completed all 4 courses once so I had times with the old wheelset.
And yes I don't expect the wheels/tyres to have contributed wholely to the increase in speed, as I stated at the time, my fitness, course familiarity, conditions on the night etc etc, but in my opinion they are certainly better/quicker than the R501/road tyre combo I was running.
I'm now running a race/skinsuit (not used on the 10 yet) TT bars, shoe covers, bike paired down to the bone, just need a hat and that will pretty much be all the equipment done - best it can be for now without shoving a shed load more money at it. Obviously the rest is down to me.