Frustrating!

I do not like the foam adhesive. I use only the Liquid Nails Contractor or heavy duty type. I have used it on the pink foam with no adverse effects. Not sure if it will effect the foam risers.

Is it because the Liquid Nails is pretty thick?  Perhaps the inclines are not sitting flat on your benchwork anymore?

What color is the adhesive?

I have the pink foam and same Woodland scenics risers.
I used the blue liquid nails foam adhesive w/o problems...

But, I also went one extra step. Cork roadbed because I used Atlas 3rail track.
I even used the foam adhesive between the risers and the roadbed. Solid as a rock.
I did use GE clear silicone II adhesive between the Atlas track and the cork roadbed.

I store the layout vertical between holidays. No track shifting at all.

If it helps. A putty or pocket knife between the foam and the adhesive and a bit of gentle elbow grease will pop apart the two foam pieces apart. I've been able to peel the adhesive off the foam and reuse both improperly aligned foam items.

Also, if you buy new adhesive for a cauliflower gun, be sure to buy cartridges laying down. The adhesive will remain properly mixed vs cartridges that have been standing upright for who knows how long.

How else can we help?

It wasn't the adhesive, as the inclines remained level.  I did manage to find one bad spot and fix it, and I will work on the others when I get a chance tonight. 

All fixed!

 

I had to shim up one part of the track where the inclines didn't line up very well.  I knew that they didn't before I glued the track down but it didn't give me an issue before.  

 

Another area was a switch.  I just had swapped out all my turnouts for command ones and on one the points didn't close all the way.  Guess that one will have to be returned and a new one purchased.