Internal or External balance 408???

With Respects "T",

Info on the block? I.E., pics of the Year designation & 'casting clock'.

---Further, pics of both 'decks' after teardown ---

If possible :D

It's a 1990 roller block LA. No pics of the "casting clock". Why would you need pictures of the "decks" of my block when we are talking about balancing?? Here ya go, I hope it helps?!?