i have had 2 turnouts with the sticking throwbar, both are in front of the south facing window. [the ami stuff gets more sticky when warmed by the sunlight].
yep - that is excatly what i did; slid a small piece of electrician's tape [sticky side down] under the bar.
i have not had issues anywhere else, and i have a dozen sitting on ami roadbed [the others are on cork, or have a molded in roadbed <<fleischmann track>>.
i liked the sound deadening of the ami over the cork.
[cork is fine until you 1: nail it, 2: glue it, 3: ballast it. then you start transmitting all of those vibrations.]
ami does not have sloped shoulders out of the box, but you can push the edge down with your finger.
ami does have an oder when you take it off the roll, but it goes away. same could be said of cork, but i like cork smell