I, as always, completely understand what you're saying. Luckily, you have them 50% of the time and through so, have a stronger influence and interaction with your boys. As I've said, providing nothing against the parenting agreement is occuring, you are right, there is NOTHING you can do, no matter how much it may displease you, that your X does or handles a situation while they are in her care.
As I put in my complaint to my X (who was/is violating the order), no matter what happened, we are still their parents. And in being so, come form different upbringings. Consequently, she has her way and I have mine, that's just the way it was and will be.
Utilize YOUR time to mold them in the fasion YOU do. It's all YOU can do. In time, if they feel her methods have been flaud, that's THIER decision. EDIT- And as hard as it may be, do not try to instigate some sort of rebellion against your X, she is still their mother afterall.
Me 35/XW 33 S13 & S12 M: 10/17/98 OM & S: 07/08 D final 06/09/09 12/03/09 - 06/13/10 "Piercing" 06/13/10: Engaged to Re-marry 10/17/10 06/25/10: Expecting baby #3 2/14/11