I worked at K-Joy in the 80's and early 90's. I did board-assist, assistant programming, and was Traffic Manager over six years. There were many attempts to drop the "K-Joy" moniker. We were known as the "format of the week radio station" back then. Each time we dropped K-Joy we took a dive in the ratings. Why? Because no matter what we did, listeners insisted on writing K-Joy in their diaries. So we gave in and kept K-Joy at least somewhere in each hour.
I guess now with PPM it is possible to finally get rid of the old moniker.