good day to all my 88 190e 2.3 automatic trnsmision has a problem with the shifting of gears it shift quite late. a mechanic told and showed me that it could be adjusted(but din't say how to). there is a adjustment beside the transmision on the driver side it has a plastic cover and the adjustment looks like a letter metal T that you are to pull it up the plastic housing with cuts and turn it. my question it that should i turn it clockwise or counter clocwise? what i need to know is that to make the shifting of the gears more faster and quickly.

thanks
a reply and instruction on how to do it would be highly appriciated