So I just got a TopHat Ambassador 2x12 combo. It runs 4 6V6s for 35 watts. I've heard, but never tried, that you can pull the power tubes in sockets 3 and 4 (the outer 2) to reduce power to 1/2 power. Anybody know if this will work with my amp? I'd like to hear from somebody that knows more than I do before I go blowing her up. She's much to pretty, far too expensive, and simply much too young to die. Thanks.