G'day Peter,
I have collimated my RC10 on a few occasions. I used a Tak collimation scope to get it about right and Al's Collimation Aid to get the rest of the way with a real star. I only ever adjusted the secondary and didn't ever need to adjust the primary (saw you asking questions about the primary screws the other day). If there's anything I can do to help let me know.
Seeing wasn't that great last night but I did get another 9 hours of data and we takes what we can get
Cheers,
Rick.