PowerMaster was drivin' me nuts, so got a "good" used cylinder from GBodyParts. After (bustin' knuckles attaching it!) doubted it's "goodness" but Brian assured me it was good & how to bleed it. He's absolutely right, again, & keeping the good reputation. Luv driving that GN now with great brakes, & it's reassuring to have a vendor with good products, reasonably priced, & available for help (all I need now is Lou for free labor!). Thanks lotzz Brian!