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Message: <blockquote data-quote="Tazza" data-source="post: 24011" data-attributes="member: 82">The first place I'd start is to check for power at your aux control coils that sit on the control block. The stems they run on are very delicate and do go bad. You have done the rite thing, pressing the button on the dash, once for the thumb switch twice for the trigger for continuous flow if you have the older style without variable flow but you seem to understand about the button.Hopefully its just bad coils or stuck stems, they aren't too expensive to replace (well not so much that you need to sell your first born child). Check for power first then work from there.</blockquote>