You didn’t mention how you got the middle centering ring past the section of the av bay where the piece you install with the t-nuts that the cover plate attaches to. I found that I had to cut away the front of the middle centering ring so that it would slide past the av bay opening. There’s also the warning not to install your electronics, switch, or battery holder near the sides of the mounting board, as it will make them difficult, if not impossible to get access to. I installed them as near to the center of the mounting board as I could, so that I would be able to install or remove the battery without much trouble. Since the mounting board is permanently installed in the rocket, I would recommend you install t-nuts before affixing the mounting board, so that you can remove and reinstall the electronics at will.
One other problem that I found, was that I used a screw terminal mounting block on top of the forward centering ring for attaching the ejection charge. Once the body tubes are secured to the coupler, it’s a very long reach down the rocket to attach the ejection charge wires, making the process very tedious. Either install extremely long wires that you can stuff back down into the rocket, or do what I did; I made the coupler to lower body tube removeable using pem nuts. Once that is done, you can then epoxy the upper body tube to the coupler. It’s much easier to reach the wire block and attach the ejection charge with the coupler/upper body tube removed.
I’m looking at your pictures showing the paint job, and it looks like you might have built your rocket with the coupler/upper body tube being detachable like I did; am I right?
One question, it looks like you have double launch lugs. What type of rail are you using?
great looking fillets, what did you use for them?
