At Taffy's request I took a few measurements as the rake on the 05's appear and feel like it is pulled in quite a bit compared to the older models. The first measurement was taken at the front upper engine mount bolt center to the front axle center.
01 model = 24 inches
05 model = 22 1/4...
Just compared my chain with a brand newey, and after 1300 kms it doesnt appear to be all that stretched, but the rollers in the middle of the links "move" a fair bit? It is probably 1 mm longer over the 18 pins.
According to the manual you measure 18 pins and they shouldnt be any longer than...