I will try the extension with the skewers on the next build, thanks. I ended up cutting a 2 inch extension and ran 2- 5" skewers from my LG plate to the nose and sandwiched them with a 2X5" piece of foam and hot glue. Then added some tape to reinforce it all. This plane looks like I've been flying it for years and it hasn't even left the hangar 😆You can try fitting it diagonally corner to corner to see if it fits with the extention.
If this doesn't work it can also be done as I described in the post I referenced above. Here are some pics below. Cut the extention to the correct size, then use a short skewer on each side and one on the bottom pushed into the foamboard. Add hot glue when inserting them then hot glue on the extention. After that you can cut your B fold track into the extention. if you add the extention carefully, you won't hardly notice it.
I hope that makes sense.
Like this.
Can you tell me the KV on the Motor Race Star BR2212 that you use?