What is your configuration batting average?

I am asking, when you have the instructions to connect something and have all the wires etc.
What % of the time you do get it right on the first try?

I almost never do, I almost always have some misunderstanding or mistake to correct.

I achieve approximately 0%

I count it as a win if i get to use the same hardware for my second attempt.

I do get over 90% overall, counting cases when i do not have instructions.
But i did electronic since i was a kid.
That makes for nearly 40 years of experience.
I am lacking on the mechanics front, not for knowledge, for implementing things as it takes a lot of time and i am always pressed for time. Having a really smal lathe and no mill does make a huge impact on the results. That made me concentrate on building smal engravers and plasma cutters as they do not require heavy metal parts. Retrofits i can do easily, and thanks to Andy and other members of this forum, programing anything complicated gets to be also easy, in most cases.