Need advice on E series/ W210 climate control use

[Pweber]

Anyone have advice on daily use of the E series/ W210 climate control that can get me past the new user curve? If I turn it way down to LO I can get 35 degree air out the vents. If I set it to 76 after it cools down it is OK but say the sun goes behind clouds I find myself needing to turn the temp up a bit, then for some reason 4-5 mins later down a bit. (and always adjusting both sides and not sure if this is "best practice") I also note if it is a hot 98 degree day like we are having right now if I get in the car and leave it where it was comfortable last (76) it will not blow as cold of air out the vents when cooling down the first 5 mins as if I would turn the temps down to 65 or below. In closing I find myself yearning for some basic hot/ cold knobs like my F350 has.