I also have gas engines, and have owned several different brands since I started glow fuel modeling around 1972 or so, I happen to like quality and reliability so I have chosen OS over some brands for ease of tuning and consistancy.
yes I do read all my manuals, engine, radio, and airplane, so that I can keep up to date with the tech. things do change from time to time rather than assuming that I know it all and can't learn anything new from the manufacturers.
upgrades and updates happen all the time.
yes I remember having to run gals of fuel for break in to get a engine to run reliable, thankfully with most quality engines thats not needed these days.
if you read a OS manual it says to do a simple run in and set slightly rich and fly a few tanks and avoiding excessive vert. flying, then tune for max performance, its what I have done and will continue doing, until I read the procedure needs to be different.
seems pretty simple to me the thread is a question about OS engines not super tiger or any other brand for that matter.