I have a WAR Flex with a mystery leak. Block regulator set to 2K psi. Will leak from a bottle pressure of 3000 psi to 1500 psi over a week. Weird thing is it seems to stop there. I’ve checked the barrel, bottle to brass fitting, brass fitting to block regulator, burst disk, fill port, both gauges, block regulator to tube, regulator adjuster screw, top cap on regulator and all 3 valve retaining screws. Any other place I’m missing? I’m stumped! Thanks in advance for any help you may have to offer.