I'll try the lower pressure first,that sound's like it could be a problem.The deal is I work at a marina,We do oil changes on lot's of boat's,so it's a handy unit when they work right.We had to get this one as the marina went through a complete management change and the old operator took all his tool's when he left.The only thing left behind was an old flyswatter!So we are re-tooling as we need stuff.I'll check the brand tomorrow,and hopefully get some spare time to put my regulator on it and try lower pressures.Thank's for the input! Tom