I recently purchased a barracuda pool cleaner. As soon as I connected it up it wopuld work spasmodically and move a few inches then the water pressure would drop and hardly any water coming out of the return inlets but lots of buddles. The supplier then sent me a skimtrol skimmer plate instead of my lockin poolrite plate. By adjusting the flow on the skimtrol I can get a correct reading on the pulse meter of between 2 and 3 as suggested. However as soon as I connected the hose the pressure drops and the bubbles start again. I have checked all the hoses for splits etc.and the actual barracuda head looks fine - no tears or anything. I have spent so many hours trying to find the problem. The O rings look perfectly fine and the pump works well without the cleaner attached. Can anyone help me please?

Pool & Spa - Zodiac - BARRACUDA G3 IN-GRND CLEANER