The same problem with random delays in acquiring lock among the boards exist in your case. An official answer from Soren is probably needed.
You would have the peace of mind if you could work with dam1121, but it requires more work and is more fragile.
Yes, exactly my concerns. Soren said originally that it would work, which is why I went ahead and ordered 4 boards. There was a manual promised which I expected to address the issue. All we have been told is to split the signal between the boards. No subsequent confirmation anywhere that it actually works. Before I actually spend all the money on all the power supplies, etc. and all the time to put it together, I would like to know if it will work as promised without delay and other issues.