Desync

I'm having a problem with desync on my map and I'm pretty sure I have tracked it down to a couple specific triggers by watching a 1/2 dozen replays or different games where people desync.

The triggers are pretty simple, they're periodic and they make 4 or 5 units at a random point in a smallish region. I'm wondering if, somehow, that random number is what's causing the problem and the units are popping at different points in the region for different players.

I could go through my map and yank out every random I use, but I use a lot of them on this map and it would be a royal pain. I wanted to see if anybody had any thoughts about this or knew of a way I could explicitly seed the random number generator at the start of my map to see if that might help.