@Peterhead I got a World Team in 1976 and we still have it in the shed back home. And I got a newer ski in 1981 that was a way better ski so you are overdue.
I would recommend something like this D3 Custom 2 for $150. It’s looks like it’s in great shape. It is going to turn better, be more aggressive if you want to, AND it will be forgiving (easy, no surprises) to ski on.
http://www.ski-it-again.com/php/skiitagain.php?endless=summer&topic=Search&category=Slalom&postid=36896.
Then, because you are used to rubber bindings, I would order a set of rubber bindings from Wileyski.com to mount on there. Or maybe you can find some used ones on ski-it-again as well. This familiar to you, type binding will be more supportive than than what you have, but not be such a big change that it will feel weird. Package deal should keep you around $400 and you will be a happy man.