Thanks! 3 Nikon speedlights on combination of Pocket Wizard Plus II's and Multimax's, with the new Flex TT5 on the hot shoe. I can get 1/400th every time at 1/4, 1/2, or full power on flashes. Hylands is sync'ing at 1/1000th using Multimax's, but I'm pretty sure it's at full power on the flashes. I haven't tried his technique, but it seems to be working great for him.
Cool! I'm currently using 3 Nikon speedlights ( 2 older and one SB600 ) with YN 602 synchs for speeds below 1/250;
And thanks to you - I;m hooked on buying The Mumford Time Machine! Looks like something taken from Back to the Future or the original Star Trek movies!
p.s. what's your flash setup? Two Nikon speedlights with CLS or some wireless flash triggers?