Hello...Tool changer froze on columbo spindle. I have a g-penny water cooled spindle connected and so far, it works really well. The problem I'm having is I can't get the water to flow through the 1/4 hose consistently. I have tried 3 pumps ,the last being a 1/6 hp sump pump. I get small trickles and sometime a good stream then slowly stops. Nothing is clogged or kinked,. I have checked it thoroughly. It seems like as the water gets warmer it just peters out. The last pump I tried, heated the water up just cooling its motor! Any Ideas??? oh...this is a 4896 machine and each section of hose is around 30 feet long.