Bruce, I have finished installing a facet pump and check valve as you described. Fuel flow checks ok. Full power ground runs ok. Will flight test when weather permits. Thanks for you help. Is there any reason to not run the boost pump at all times like we do the main pump? Seems there would be less chance of pilot error that way. Also, did you use an oil pressure switch in the positive wire to your boost pump to shut it off in case of an accident?