Cycling specific pain

No, I also thought this and made sure they were ok-thanks to RTI the usual and favoured tightness on the strap has a notch so it naturally stops in the same place.

I'm actually wondering now that you've mentioned this whether it might be all the mozzy bites round my ankles that are fucking up blood flow... hmm.

pins and needles/numbness can be caused by subconsciously scrunching up your toes in the shoes (especially when grinding). most people dont even realise that they are doing it. try splaying your toes in the shoe and make sure the axle of the pedal is directly below the ball of your foot.