91 300E Modulator Valve Access?

[sptt]

I have a 1991 300E with 170K on it. It shifts a little hard and quick out of first gear (would prefer takeoff in 2nd only if possible) but I'd love to be able to try to adjust the modulator valve on the Transmission per these forums. Have seen pics and diagrams off this valve but see nothing that looks like it on the side of my transmission underneath. Anyone have a side shot view of the transmission so I can see where it actually should be and also while it's in the vehicle from underneath? There isn't much room underneath the car to get my hand up there and turn something.