So my standard recipient letter shows this for the partner info, not sure why yours is missing and you need to add it, but maybe this will help?  Not sure if the formatting will come through, I might need to give you a screen shot.

<@PTRNAME>
[@PTRADR1]<@PTRADR1>
[@PTRADR2]<@PTRADR2>
[@PTRADR3]<@PTRADR3>