By the way, if you weren't aware, there is a resource fo 172-FMM-3 engine parts:
https://aj1moto.com/collections/zscb249f-engine-parts
But this is the 5 speed engine. So the head parts should be identical, various parts like the TDC sight cap will probably be identical... but of course, transmission parts are different and there is no counterbalance parts!
I sold my 2nd gen Templar X because I like the 5 speed and 100% parts are available (and I really didn't need 2 Temp X bikes!).
If you see a resource for 172-FMM-5 parts (counterbalanced 6 speed), please let us know!