Kimmerz, I have had similiar incidents w/my xh. They won't acknowledge certain questions because they don't want you to know what they are doing or what they have in their possession, nor do they want to discuss the situation. They are very good at this. By admitting he has the items, it would make him feel guilty for taking them. He took them when he was in an "angry" stage and now he doesn't know how to say he has them and give them back to you. He knows that he took them and he's acing out like a bratty kid. Now that you've mentioned them, they just might show up one day when you least expect them and he'll pretend he never had them. Passive-aggressive behavior.
He's still very much in mlc and their brains can't take a lot of discussions or the written word. You have to be specific and to the point and then move on. They tune us out after a period of time.
Your expectations are too high. You are not dealing w/someone who is completely focused. You need to keep those expectations at zero at all times. I would not ask him again about the items because the more you ask, the more likely he will be to keep them and not tell you out of spite.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
