One of my machines - powerflite - is really getting my goat. two 5.7 three stage vacs in series one would think should recover a decent amount of water from 35 feet. I measured the lift on 3 different gauges.14 inches of mercury on one, over 180 water column(they got pegged) but really crappy recovery.I tried it from 15 feet and if I lean the wand on it's side water runs out.I've checked for obstructions in the wand and hoses- nothing. It's run like crap since I swapped out the vacs. No leakage where the vacs are mounted or at the stand pipe. I like the heat the machine generates, the pump is a pump, but the vacuum (doesn't) sucks. I know it needs to get more air flow but you would think it should be enough for short hose runs. Any ideas?