I am encountering a problem with my gear box hitting the left hand lower chasis rail opposite the lower wish bone mounting point.It appears that the engine torque causes a clock wise rotation of the whole drive unit (if viewing from the rear) which then angles the a8 box so the lower casing bolt of the out put shaft cover on the left side catches the chasis member .The car in question is one of the S.A. cars ,I presume the chasis was made from the standard rf jigs so has any one else had this problem ? Have I asembled any thing wrongly ? Or is there a Cure with out major surgery