ok for the sake of clarity and because this is a american forum i will use the sae scale from now on.
mike i don't see why you are quite happy to accept the dyno figures of 83hp peak and 60lb/ft peak but think there is something wrong with the lower part of the chart,
all thats happened is that due to better design my exhaust has filled the hole in the torque curve that the d&d 2-1 creates, if you know how to doctor certain areas of dynojet 250i charts your smarter than me or my dyno operator.
also for clarity the 904 power figures of 85hp and 65lb/ft torque that you quote mike i presume are for your 904(the one that you posted dyno charts for in the dyno thread) which has more engine mods than mine i.e 42mm mikuni(worth 5-10hp) and 813 cams(worth 5-10hp), so with the addition of 42mm tb's to my bike should put me around 88-93hp sae and the addition of 813 cams should put me around 93-103hp
by the way mike i risked life and limb to try the wheelie test in sub zero temperatures here but i did it at 3000rpm because that is where it makes 50lb/ft sae, and yes it does!.