Help with the right angle when Injector shaving

[merwtje]

I don't know if this is the appropiate place to ask this question but it is:

What angle do I use with shaving with an Injector razor?
Yesterday had my first shave with such, a Schick Ever-Sharp with a Pella blade. It was a rather nice shave but I have the feeling it could be better.

[Shave Cat]

I have the original instructions from a type J injector. They say, "Keep the razor almost flat against the skin." Keeping the razor's head completely flat against the skin may cause dragging and tugging. Of course, just as it is with a DE, if you use too steep of an angle you can scrape your face if you bear down. I hope this helps.

-Clarke