from an old post:
Cinnamod asked me to look into this deeper. I dug into the configurable files for setting Fixed Delays, after cast delays, cast times, etc. Bowling bash has no entry in the file.
What does this mean? This means that this delay was hardcoded by kRO into the exe at some point in the past. It is not something we have the capability of changing.
Maybe the skills listed in the first post are the only ones that can be changed/edited. Who knows, without any official response we can only guess.