Well done Darren, that's exactly what was said in the post by carlos1982, so that's our second cbr1100 sidestand confirmed. Nice one for posting the pics. I expect it may be easier to catch your heel on the sidestand to pull it out as well. I've always have the heel of my boot slipping off the original one.
I have got a 6mm spacer in mine now but have found it's OK on flat surfaces, but as soon as it's parked on uneven ground it does unnervingly lean a bit to much.

I shall be getting a Blackbird stand myself soon.
Glad it worked out for you mate.
(:-})