A. 1 trip, I have a list and everything works great.
B. 2 trips. My list had something left off of it.
C. 3-4 trips. Can't find my list, and the color/size/length is just wrong.
D. 4-plus. Did not make a list, and they sold me too long/short, big/small, left hand threaded piece of crap that does not work.
E. Screw-it, I am paying someone else to fix it!