I was wondering if anybody knows how to convert the stock px type r cast control knob to a clicker one?

I was wondering what would be the best finesse spool for this reel? Does megabass make one that will fit?

I was wondering if the daiwa px-r cast control cap would fit on my revo mgx? Or if anybody knows where i can buy a red cast control cap that will fit if the daiwa doesn't? Thanks