I have a 1500 mg midget (same gearbox as the 1500 spitfire) and have the transmission apart and have a question if you could help me with.
There appears to be be a lot of slop in the 3rd 4th synchromesh which exposes the detent ball, see picture in link below.
https://drive.google.com/open?id=1Ab3d5J6wjea--xCyCcdaCCcKaqYtMkKO
I removed the input shaft and measured about 3/16 of spline exposed from the synchromesh, when you rebuilt yours in the video, did you notices that mush exposed spline? See picture of it in the link below.
https://drive.google.com/open?id=1vmRQW1qcUF_GLxQHKxXibWp8Kak6gHZv
There appears to be be a lot of slop in the 3rd 4th synchromesh which exposes the detent ball, see picture in link below.
https://drive.google.com/open?id=1Ab3d5J6wjea--xCyCcdaCCcKaqYtMkKO
I removed the input shaft and measured about 3/16 of spline exposed from the synchromesh, when you rebuilt yours in the video, did you notices that mush exposed spline? See picture of it in the link below.
https://drive.google.com/open?id=1vmRQW1qcUF_GLxQHKxXibWp8Kak6gHZv