So my one year warranty is up next month, I've had this machine replaced twice and have had a new pump replaced about 1 month ago. I'm worried now because this is you could say the 4th pump that's been problamatic, I don't get a steady stream of water. Is this normal on these extractors? Its more of a pulsing stream. This is the first extractor that I've owned. Im concerned I will continue to have this problem after my warranty period. The machine works great when the pump puts out a steady stream. I've never put any kind of chemical in it.