Thats a tough question Jon, It will probably be a progressive thing, his main complaint is the amount of time it takes him to slow the thing up especially into Quarry corner at Castle Combe, this is due to a combination of excess weight and brakes that are a bit lacking.
In the bikes current state he finished 2nd behind Nigle Reeds Suzuki at castle combe with a best lap of 1m 18.22s, which was 0.5 secs a lap faster than 3rd place man Kenny Watmore on the MotoRapido 1026
So Simon certainly knows how to ride the bike.
His best lap of the day was a 1min 15.4s on his R1 which he arrives at Quarry corner travelling a lot faster and manages to get the bike slowed and turned easier than the Ducati which arrives travelling at a lower speed.
http://www.theresults.co.uk/New_Era_..._June_2005.pdf Mag wheels and Swing arm will certainly help which will take just over 3 Kilos off the bike, 4-pad callipers and a Brembo Radial master-cylinder will help improve the brakes. In SoT the bike is already a bit of a giant killer but the new 600s like yours when fully race preped are a differnt story.