doing the mid tank mod will usually let the fuel gravity feed to the carb and with the addition of the pulse line is allowing way too much fuel to get to the carb. Try leaning out both needles a little and see what it does. On a side note, not to sound like a $%#& but this is pretty much an electric only forum. You should check out savage-central.com or hpisavageforum.com You will find all the info you need at either one of those
