I have been using this combo after a PL:
:3::3::[[P]]::+::[[K]]: > WR :K: > :9::K: > :6::6::K::K::K:
It does the same amount of damage as the first combo you found, but requires very little timing if you add in 44 before using WRK. So, it would be:
:3::3::[[P]]::+::[[K]]: > :4::4: > WR :K: >...