It's a definite hit or miss in finding the note!
Since Clayton was on break, he forwarded me a YouTube video to review since he wasn't in town. I finally have a lesson with him tomorrow so hopefully he can clarify some things.
I also found another helpful YouTube video on extensions:
Working on extensions has also messed up my intonation and fingering for first position. I thought I had first position down fairly well, but apparently not! Working on extensions seems to be making my hand drift towards the pegbox and is making my notes flat more often than not. And making my first finger waaayy too flat because I'm making the space too wide!
...it's just not clicking for some reason... grrrr...!