Parts Store Rant, the other side of the story

So, everybody has thoughts on what makes a good or bad counterguy, but what makes a good or bad customer?

i mostly do customstuff where i work but any customer that has the time to listen and maybe learn alitle is a good one! not saying im not learning from customers cause i am learning from customers all the time and some of them knows more than i will ever learn!

just alot easier to deal with people that are willing to take a few minutes to get the right parts the first time :) i realy dont care if it takes 30minutes to sell some small stuff for just say 25$ if it means the customer gets the right part in the first place and ends up a happy customer:)

from time to time someone comes that will buy some stuff and when i ask him what he wants to do with those parts i may have a simpler solution that will cost less and give him a better endresult even if it takes some extra time to explain why and how, most of the time its worth it
the few that wont listen just comes back and will buy more parts to get it right later when they realise there misstake and are most of the time alot easier to talk to the second time.

and i have no idea about how many times i have asked upset camaroowners if they tried routing the pipes above the emergencybrakecable and getting the answer no.. when that solves ALOT of trouble, i know i always try to give that advice when handing the exhaust to the customerin the first place and i just cant get why so few listen to it and then comes back to tell me the system wont fit right...