slammeddime
+1y
Sounds like you're simply new to switches and don't know how to tappppp 'em yet. It will come. I have 1/2" valves on my truck and I can adjust the height to wherever I want, just takes practice tapping the switches and figuring out how far you can 'push' them.
For 'flow controls', if you so want, get some ball valves and introduce them somewhere between the fill valve and tank, then you can adjust the ball valve as needed to get a slower flow rate.