_lpadmin problem

Hello, I saw a problem come up with an image I created with instaDMG (10.5.7). When I go to add a printer, it's asking me for credentials for a user in _lpadmin. When I enter my creds for an admin user (myself) it's not accepted. I have to enter the PW for my local admin account to accept. When I hit id for my local admin account, I see that it's in _lpadmin (98). I am not however. Wouldn't anyone in admin (80) automatically be in _lpadmin? Anyone seen this? This hasn't come up in older versions of my instaDMG created images. Thanks for the help.