There is play btwn pushrod and brake pedal. Don't see a way to adjust on my model

 

The two bolts or nuts that hold the master cylinder to the booster. Take them off. If you gently move the master cylinder to the side you can access the rod. When you take the master cylinder loose line it up like you're going to reinstall it to the booster. If you have to use any amount of pressure to make it fully contact the booster then you need to adjust the rod inside the booster.

 

OK will do. As I remember that rod was solid-the adjustment is with the contact point?