Stop in for a cup of coffee

Question for the crew.....If running a front engine plate, is it recommended to solid mount the transmission too? I have rubber mount on trans now. I am hearing something at idle in gear. I know the sketchy guy who built this trans so it could be his fault (me). It seems to work well, shifts well, although doesn't shift as violent as a reverse pattern valve body has for me in the past. Thoughts?
i would guess yes but have no experience there
I would guess that solid mounts made of plaster would be worse. But I also have no experience with it. :p