Strobe issues with Nikon d810 and Nauticam housing

I've just upgraded from a Nikon d810 to a d850 with in a Nauticam housing and am having trouble getting my strobes to fire at more than about 1/2 strength. Before I used the pop-up flash and standard fibre optic cables and I am guessing the issue has something to do with the new LED triggers or the cables themselves. Any help is appreciated.

I figured it out with some help.

Would like to know what you figured out.  I upgraded from D810 to D850 (both in Nauticam housings) last March and have had no issues triggering the flashes.   No TTL of course.

Craig Johnson