w203 c220cdi transmission problems
 

hi all, i have a 722.699 autobox, now i havent owned the car for long and it seems to be reving between gear changes and sometimes jumping out of gear and sometimes holding in gears also, the car has recently had a new thermostat which shows the problem up more when hot 80-90degrees than cold ( no problems)....
i have just had the box refurbed, its had an exchange torque converter and a gearbox kit and clean out, torque converter was blue and oil like mud, now i was told all is well yet a few miles down the road when up to temperature, the faults have returned, the fault codes were cleared from the car, am i right or wrong in thinking this could be the electroplate ???? is this part of the refurb???? any help much appreciated

mike day