Got PATC level 3 C6 trans with cheeta manual reverse valve body. I first was having issues with no second more times than I did. Did fluid and filter and flushed cooler. Pulled valve body and cleaned it. Second is now working. However the 2-3 shift revs/slips. Have read about adjusted the second gear band helps this sometimes. So will try this tomorrow. In the mean time looking for other suggestions as well. Should add there was some clutch material in the pan and fluid was dirty but didn't smell really burnt.