Hi. I am trying to put together this Rangemaster, I get sound, but it's almost like a no booster, very low. Does anyone see a probable cause for this in the picture? I have built it twice, same result. (I am using a SFT308 transistor. The base seems to be the one in the "middle", at least that's the only place there is sound. It's seems difficult to find a proper diagram for it.) The only thing that I might be unsure about, is where the grounding goes, the pic doesn't say. I have taken a ground from the input jack to the strip ground point an another from the same jack to the ground on the other jack. Ok or not?