Sander Vesik wrote:

My guess would be they didn't and just corrected after blast-off. yes you
get an additional failure mode (larger slope angle than anticipated)
but i doubt an electro-mechanical gadget letting you do this with
resonable precision would have been that large.



I'll bet it was done this way: The stabilization gyros in the ascent
stage were mounted in some sort of bottom-weighted gimbal assembly that
allowed them to pivot back and forth till they were vertical in relation
to the Moon's gravity field; then locked-
at liftoff they commanded the vehicle to bring them on axis with the
vehicle's ascent trajectory, so that the vehicle ended up ascending
vertically.

Pat