Hey Guys, I am wondering, how do you tolex the back of a bass cab to get a single seamless flat upholstery job. With guitar cabs the back is easy because it is its own piece and you pop it in. On bass cabs since they are front loaded(mostly), the back is seamless and sealed. I cant find anywhere where the tolex is cut, or where a line is where they had to use another piece. Does anyone know how they do this, or have pictures/videos/step instructions of that process. I just cant wrap my brain around how one piece of tolex can go all over the cab and all of its angles without needing a separate piece, or seeing a cut somewhere. Am I just missing something?! Thanks!