Also have a TL3, with focusing feature (also a TL2, NF2, Scorpion, and Polytac incans, all NOS, have focusing beams).
I run it on 2x16500 IMRs. A really nice incan light.
I've also tried a Tad Customs 7212 bulb and works just fine. I even run a Tad 3718 bulb in my Scorpion, but limit it due to...