FMJ spindles > POLL

Why would they re-engineer? Well, if the tooling was wore out, then there is no incentive not to make changes when the new tooling is made.

That said, the only issue I've heard with using them is the potential for over-angling ball joints due to the increased height. I won't run them on my car, but have heard of no issues.

Since I won't run them, I don't typically have any around where I could verify the ball-joint issue.