Is this really a "special" one or are you just talking about the "newer" version closure. I'm pretty sure I was told when I got my 29/360 motor it had the proper closures to hanle all reloads for the case. If you can tell me how to identify it I'll be happy to bring it up sometime. Sadly I won't be at MHM to deliver it myself. 😥

It's the standard one with most any newer 29mm set.

Well, let me start by saying that Aerotech specs are not my forte... Let me explain...
My older aft closure has a smaller ID that the nozzle for the 29/180 reloads fits perfectly in. However, we have orderd and are using a larger 29mm nozzle from RCS for our ex G motors, that has an OD of the exit cone too large to fit in the older closure.
My understanding is that to accomodate the larger nozzle for the I200 and the I 258 R, they sell that hardware set with a aft closure that has a thinner wall and therefore a larger ID that can accomodate the larger diameter of the nozzle.
The reload that we tested was burned with Jon Skuba's aft closure from just such a set.
If the new configurations of 29mm hardware have adapted this aft closure for all the reloads, then I'd say we have a good chance of finding flyers who have them.
Chris, you are a walking encyclopedia with Aerotech specs, so I certainly trust your info. After explaining it a little clearer, are we on the same page? Do I just have old hardware?? (yes, mine is quite old...)

Batman, If it turns out that you have one that works, I would be very thankful to you if I could borrow it for MHM!!

Found mine. Are you gon'na need cases too? Sign me up for at least one Dragon's Breath race.

Yes, I have at least one, possibly 3. I know mine fit the I200, just wasn't sure if the H268 was different. I will bring them up tomorrow. Are you going to be there or is there someone else I could give them to to get them to you? How many do you need?

Batman,
I will see you out there tomorrow!! Thanks!