Has anyone got advice on the foam incline sets

[LynnB]

I have used the 4% grades quite extensively on my logging layout. It allowed me to easily transition to various heights. When I installed them I used white glue, I pinned them in place in a few key locations, then set some old Physics textbooks on top to hold it overnight. Worked well for me and I would reccoment them for anyone who needs to transition between multiple heights of foam.

I think the 4% are ideal for the short logging trains where as I found when I tried them before they were a bit too steep for my longer trains, but then again there's always possibility of multiple units.