stainless steel and thimbles

[Brion Toss]

Hi again,
Relax. All is well. Maybe not optimal, but well. 7x19 is too elastic to be ideal for standing rigging, and too corrosion-vulnerable in warm climates, but it will do just fine. You won't be able to point as high, might have to reef a bit sooner, but hey, I had to use it to rig the Lyle Hess cutter we used as a model for rigging in the "Apprentice".
One way to compensate for the extra elasticity is to make the wire oversize, and that appears to be what you have. As for the "consonant" reference, I meant that thimble radius, if it is not to weaken the wire, must be suited to wire diameter and construction. And as it happens, 7x19 can take a relatively tight radius. It might be enough that you just use the heaviest thimbles that can fit into the turnbuckle jaws.
Bent turnbuckles are another thing entirely. They are not okay. The rig is always trying to straighten them, and too often simply succeeds in breaking them.
Finally, please step back from all these scary details, soften your focus, and see the rig as a whole, as a system. Yes, this is PT woo-woo, but it is also a valuable engineering approach. Component selection should properly happen at the end of a design process, so that all the answers are obvious. Your rig is knowable.
Fair leads,
Brion Toss