bobouz,
Thanks for the prompt & helpful reply. I tried putting the Tusq saddle on the Texan, but it wouldn't slot right in like on the Kalamazoo guitars, so I put the original back on. When I strung it back up it played easier than before.
Result!
Your description of ceramic saddles is very clear - I don't recall ever seeing one, only wooden ones.
They seem to work OK on a 12-string,but the Eldorado & Frontier were definitely better with Tusq.