I have two Holley 1850's to rebuild and modify for use with a Ford medium riser 2x4 intake manifold. I know Holley used to have the best rebuild kits, and folks wanted to steer clear of other brands because they weren't as good quality and/or didn't work as well (different needle and seat, power valve opening different shape, etc.) With Quick Fuel, Demon, Edelbrock, Jegs, etc. now making Holley rebuild kits, just wondering if they still have the best?