Your Diagnostic Codes are as follows: -
MID030 - Cat Monitor System
MID079 - Hydrostatic Transmission Control
CID0070 FMI03 - Parking Brake Switch - Voltage above normal.
CID0137 FMI08 - Left Motor Pilot Pressure Sensor, abnormal frequency, pulse rate, or period. in other words the signal received (of whatever type) is outside the expected range.
CID0299 FMI13 - Transmission Lever Position Sensor - requires calibration (sounds likely)
CID0324 FMI05 - Action Lamp - current below normal.
I would attempt a calibration of the transmission control lever sensor first.