You may just need to prime the dash. [5k 5s 5s 5hs 236s 6(FRC)6]xN if that helps. Make sure to watch out for the golf ball warning squiggles for extra long combo lulz.
Also with the sword, try 2k 2s 6hs swipe. It may be easier to connect then the 6p. If you settle for the 5hs you miss out on the awesome hi-low mixup altogether. It might be a bit less damage, can't check right now.
EDIT:2s was already suggested by Zoogstin.