Finally got to my first shave with the Tarmax injector. I used a Personna blade with 1 shave on it and turned the adjustment a half turn from where the handle bottomed out. Razor has plenty of bite if not careful at this setting. Took down a week or so amount of growth with no problem at all and with a Personna blade which usually doesn't perform well in less efficient razors. End result BBS finish achieved.