Jason,
The original owner has made me an owner of the yahoo group but I still
seem to not have full permissions of the existing yahoo group.
You may have been made a moderator with limited permissions. When visiting the Yahoo Group's pages click on the Membership menu. Look where it shows your email address. If you have a blue crown to the left of your email address you are signed in as an owner of that group. If it is a green crown you are signed in as a moderator.
Or if someone knows what instructions I can send the original owner
that might help?
Have a look at Steps 3 and 4 on this wiki page, it has screen shots of the Yahoo Groups pages you need (and you need to be able to promote the agent, not just invite the address):
/g/GroupManagersForum/wiki/Transfer-from-Yahoo-GroupsIf you can't get access to the Invite Members page, or to a member's Role setting, then feel free to send that wiki link to the original Yahoo Group owner. GMF's wiki is readable by the public so that person won't need a GMF subscription or Groups.io account to read it.
Shal
--
Help:
/static/helpMore Help:
/g/GroupManagersForum/wikiEven More Help: Search button at the top of Messages list