Was looking for better sound, Bought a Grant Fidelity B-283 Tube buffer, Came with cv4010 rk-d-sda tubes(supposed to have 6j1 crap)... have no clue as to how good they are. One does seem to light up dimmer than the other... Just wondering besides tube rolling... is there anything I can easily do to it that will make the sound better? Should I just crack it open and see whats goin on?? Any help/ advice is very appreciated... Im a newbie. Only in it for about 1.5 yrs now.