gbox

Hi all! Hope im posting in the correct place. So my question is this, I currently drive a Supra MK4 (410 whp) , weight down to 1280 KG ~ , wisefab all round, and using a 330d Gbox with a 4.1 Ratio Diff. A major issue i been having is that gearing have been closing very early on each gear, 4th...