Yep. The pump sucks. A method to solve this like the apple iphone 4 is to use a bumper. Only joking.
Just take the pump out and fill some boiling water in a cup. Just dip the tube from the pump and start pumping to unclog.
For the above question? I have been using this now for over a year-ish. You can see my blog as I have been keeping on and off pictures.
I have not seen and temple hair growth from this. It started off with very weak vellus hair and nothing happened after that. As I have still a full bottle left, I will continue to use it. It is actually quite cheap. I have only gone through 2 bottles over a year for the temple hair.
From my own experience, in order to regrow temple hair - it is better to invest in hair transplantation - FUE.