I've made a huge, huge error! I used to own a Meade SN8. I marked the primary and OTA and was able to remove the mirror as needed. That scope had an accident and I bought one of its twins. I took it apart for the first time today and it wasn't until I was putting back together that I realized that THIS isn't the scope that was marked! Now I don't know what to do. I realize there are only 4 options for putting it back on. But I haven't the slightest clue what I'm looking for if I choose one of the 3 incorrect ways. Extra frustrating because the clouds have parted and I had plans for this scope tonight. What do I do???