Sure Jeff--My guys usually pop the X-jet off but they can also just close the chemical valve on the hose up by the X-jet so no more chemical hits the surface being cleaned. This way you can use the X-jet for rinsing if you want.
The M5 X-jets are adjustable. You turn them one way and you have close to a Zero degree spray(Probably more like 5 degrees). You turn them the other way its like a 60 degree spray for closer up cleaning.
The regular X-jet use to be that you have to screw in a tip to change the spray(Might still be like this) The M5 is what you want.
Hope this makes this a little clearer for ya.