I think only the M2 Cryos is made to accept trits in those little slots.
Only the M2 says this in the description: "[FONT="]Six Tritium Slots (compatible with 1.5mmx5.5mm vials)" [/FONT]
But mash.m installed them in the actual fins here and that looks pretty good.
The sun cures the adhesive. Make sure the norland is level or it will flow. A bright sunny day works quite well. Or you can find a $20-30 convoy uv light.