JDP Motorsports in Utah modified my Zl1 1le to 900 horses using your RXT 1200. I am to put 500 miles on the car and then return to JDP for any adjustments. The car shudders somewhat in first gear. Can the clutch shudder be resolved through adjustments? It would be helpful to have some sound advice so that I can pass on my concerns to the mechanic. Also, I\'m originally from Georgia, if you can tell.