So i just added a biturbo to my 08 Tomos LX. I up-jetted and had the air-box modified. The low-end is good and i love the top-end, but the mid sucks. Is there anyway to fine tune the mid? Carb? oil/gas mixtures? Im currently running a 22 tooth rear sprocket. Do i need to re-gear if i want to get better mid? I was ridding up some hills today and it just sucked. Any suggestions?