I used to have 2 sided mtn bike clipless pedal on my roadbike...then I upgrades. Problem is, these new pedals are too heavy on one side and tend to tilt back. I have a harder time than I'd like trying to clip in. I'd like to adjust them to stay more "flat". There is a black ribbed ring labelled "tighten" (not what you thread them into the crankarm with) but it's at full tight I loosened it and tried to reposition the pedals but it didn't seem to make a difference.

Any suggestions?

My suggestion is keep practicing. The "black ring" adjusts the tension upon which your feet should release, not the position of the pedals themselves.

The rear of the pedals will always point down as it is heavier than the rest - as you have already noticed. The trick is to place the tip of your shoe slightly above the middle of the pedal, and then move your foot forward.

I would back the tension back off until you get used to riding clipless pedals. As stated above they will hang down. This actually makes it pretty easy to hook them with the front part of the cleat and then move your foot forward and down. They will snap right in. It takes some getting used to but it will become second nature.

For whatever reason I'm having a brainfart (footfart?) with these. The clipless pedals I had for years on my mountainbike were never this much a PITA. I've done some 400 miles on the trainer this winter, I guess the first time on the road this season was going to be a little rough.....I thought you never forgot how to ride a bike!!