I told Dr. Kiwi in one of those other threads that his idea of turning the shaft around, in order to take advantage of the horseshoe keeper to keep the shaft in, won't work because there won't be enough shaft at the other end to put the prop adapter onto. He has apparently chosen to ignore this info. Also, it's ludicrous to suggest...
Read on. Message #1, third and fourth paragraphs.
The last message links to a modification for the prop mounting.