WR, Be sure to address the issue of the furniture in your response. You need a list of what he wants in the way of furniture and tools.
Also, you need to state that he needs to schedule visitation times w/you in advance and adhere to stated times. That means picking up your sons and returning them home. If he's going to be late, he needs to contact you, not your sons.
Also, state that he is not to discuss the negotiation issues w/S18. That any discussion about the furniture, etc., are to be discussed w/you or better yet, handled through the lawyers.
You have to turn what he's said around.
Also advise your lawyer that she is to advise the opposing counsel that there will no more discussions about what your sons hear in your home, i.e., you are discussing your divorce issues behind closed doors on another floor and you do not have control over where your sons are at any given time, i.e., you have advised them that when the door is shut, that means privacy and no listening at the doors. Your lawyer needs advise the opposing counsel to counsel her own client on such things as well.
WR, I went through some stuff whereby it got absolutely stupid, but I put my lawyer on notice when things were stupid and I had to advise him that I wouldn't pay for childish he said/she said stuff. That we were negotiating a divorce, not a playground argument. When I asked him who was paying him for representation and he responded that I was, I then proceeded to tell him exactly what he needed to be doing and to do it. Once he realized that I wasn't playing games, he started doing what needed to be done. But, as long as you are willing to play the childish games of he said/she said, the lawyers will rack up the billable hours and you both end up paying more. Bottom line, take a firm stand w/your lawyer. She needs to understand that you've had enough and get to the business of representing you and remind her that you are the client and paying her to represent you.
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.