Hi Matt_H.
I don't have any advice about your A1200T, but
I noticed that you said your A1200 mobo had some
modifications made to it. Well, I have a A1200
motherboard (Commodore Rev 2B) sitting around
here. It works, it just needs rom chips. I
took them out to put in my Amiga Technologies
A1200. You can have it for the cost of shipping
it to you. It has had no modifications done
to it, and maybe getting an original motherboard
might help. You can contact me at yogi_amiga@yahoo.com.
I live in Chicago, so shipping should be nothing
if you want it.
Yogi27