I recently purchased and watched Iain's Heian/Pinan series. Great DVDs !
Apart from the obvious bunkai what interested me was the difference in Pinan Nidan and Heian shodan. The obvious differences being:
- First technique missing from shotokan version
- Position in Heian/Pinan sequence.
- 45/90 shutos
Now No3 I am not too bothered about, it's No1 that interests me. It looks the same as 4th technique in the shotokan version that is in both pinan/heian. Is this correct? This I suppose would balance the first two directions at the start of the kata. Are there any explanations as to why it was removed/replaced with a simply lower block?