Tuning Air Arms T200 Gates Quick Fill Kit

I recently got an Air Arms T200. I wanted a simple single shot rifle as my carry around gun that I would not cry in it received a small scratch. Unfortunately the probe fill adapter for the fill adapter ( yes it does have two different adapters that you must use) was back ordered at all the usual sources. Searching I found the Lane Air Arms T200 Quick Fill Pressure Gauge Kit. Except for the added expense it seems like the ideal solution. I dislike having to take off the tank to fill it.

Does anyone have experience with this fill kit? What problems should I be expecting?

Thanks