The only other things that I noticed so far is that :4::h::+::K: leaves you at -6 on guard instead of -7 and it puts you out of throw range. If you do :P::+::K: after :6::6::P::P:, it leaves you at -2 on guard. I was hoping it would be +1 on guard like :9::P::K:
Edit:
And :6::6::P: is now...