And that's what you're going to have to do in transitioning from a non-Union job to a Union shop. In the non-Union setting, FARs is the only limiting factor. In your case, FAR 117 may give you a leg up on the changes you want made.

Be aware that if you want to tighten up the work rules, you'll have to spend some negotiating capital on that issue that may have gone toward pay, benefits, etc.

Best of luck with your negotiations.