Qwicol

Hi, it's my first post here :) I've just finished soldering of this http://www.electronics-lab.com/projects/power/001/index.html power supply and I've encountered following issue: In max position of potentiometer responsible for maximum current and in short circuit with amp meter my max output current is only about 40mA and current limiter is working. What should I check in the first place? I've checked op amps and voltage regulation and they're ok. I'm counting on Your help. And sorry for possible gramatic errors, i'm rather bad at writing in english [i'm from Poland] ;)