Sounds like there are other things going on
re the rig "not transmitting"....
However......if you could get that antenna outside of the
attic it would make a world of difference, received and transitted signal wise.
But I think you know that. Good luck and welcome to ham radio
need more guys on HF. I really, really don't think this
is something you will have to send the radio back to the factory for,
if that makes you feel better!
73, Ken AD6KA