I tried inserting this code in the liquid packing slip template and we have the description showing up now.  it's the red text inserted between the existing sections. if it doesnt work i might not have copied or highlighted enough of the code; lmk an...

were you ever able to resolve this?  we need to offer layaway to our customers but haven't been able to find an app that meets our clients' needs. 

I am running into the same problem. how did you resolve this? 

Still no answer?  i need to increase the homepage limit of 25 dynamic sections as well.  Argh!