making a usuable 4T, I need help!please

[CINDERS]

These are about as accurate as I can get them from my BSA 1944 T which is featured in Peters Book in Pad Trials when they had issues with the front pads working loose both scope & rifle are still together after 73 years and will remain so until I am wheels up. The measurements will be different "T" to "T" but these give you something I guess;

Yellow - 0.9105"
Red - 0.5540"
Blue - 0.4440"