@warhawk You're missing out by not using the Injectors Mel. I think maybe you're scared that it will shave as well as the Cobra Classic....
(Which they did for me, hence my letting the CC go!)
@wutwutman I can't help with the stuck adjuster, but that razor has a very unusual shave angle compared to every other razor I've had. My first shaves with it felt like it wasn't cutting anything, which it wasn't, so I had to play around the find the best angle.