Well, as there are a number of things going on here, I'll need to narrow down one thing before we begin troubleshooting for you, cool?
Ok, you said that you got your instanced objects to randomly rotate.
My first question is how did you do this for your objects exactly?
As there are a number of ways to do this each with their own individual issues, so i just wanna make sure I don't waste your time
Israel "Izzy" Long
Motion and Title Design for Broadcast-Film-DS
izzylong.com