Hey Guys...having a fuel pressure issue now. Have a gauge in the cockpit and it was running at 38lbs at idle with the vacuum line on 2weeks ago. Next time I ran it it dropped down to 30lbs at idle with vacuum line on. Took vacuum line off regulator it actually dropped to25lbs. Ran it again today and it's down to 10lbs line on or off. Seems so radical maybe the gauge? No fuel leaks I can see. Double racetronix pumps almost new and FP gauge almost new. Appreciate any thoughts you may have