I may have found the answer to my question about Takes 9, missing Take 10 and 11....
http://www.beatlesebooks.com/misery
This source claims the Feb 11 sessions ended Misery at Take 9 which was a FULL RUN THROUGH WITHOUT ANY PIANO or GUITAR in those parts.
THEN on Feb 20th, the Beatles were not present - I'll copy and paste the text for the rest -
George Martin experimented with adding piano overdubs onto "take nine" (this is the common INCOMPLETE take 9 most sources use) but, upon listening to The Beatles performance, decided that the first half of the song was flawed in various ways, such as a speeded up tempo at the end of the first verse and a flubbed bass note from Paul at the beginning of the song.
George Martin decided to perform an edit of two different "takes" to get the finished master of The Beatles' performance; the first half of "take seven" and the second half of "take nine." Upon listening to the original recordings of both "takes," it appears that the main edit occurs just as the third verse begins (at the word "shend") while George's guitar run in the first bridge of "take seven" must have been edited out as well. With this complete, George Martin went back to work in performing his piano overdubs onto what was now "take 11," playing the exact riff that Harrison was playing on the guitar, only in octaves and, of course, with perfect timing. He also played a piano arpeggio on top of George’s introductory guitar chord and added two accent notes in between the lyrics in the final two measures of each bridge. It took five takes for him to complete these overdubs to his satisfaction (takes 12 through 16).
So kool!
PS -
SO this RECONSTRUCTED TAKE 11 - I notice the bass notes in the intro are not out of tune! you must have known this. So technically you can have 2 Take 9's - the incomplete one you with the out of bass intro, and George Martin testing the piano and you could reconstruct a FULL Take9 without any of the piano and make a similar second half that's empty of piano and guitar to complete it.
have fun!
steve