Ameri-King Corporation loses TSO for ELT AK-450 and AK-451

Mar 26, 2019
I've ordered and received my ACK-04, started the install and stopped before I got to far into it to search a couple options. First, to remove the old tray the ELT sat in requires you to get under the floor board since there are nuts on the four screws which requires a new inspection hole to be cut. The second is the antenna, when I asked the local shop that does lots of work on fabric planes they said there needs to be a larger grounding plate installed I didn't see anything of the sort in the instructions. Have anyone of you all ran into similar issues?