not really trained to ask those qusetions. for the most part people like me are doing their best to help a customer, 99% of them just want/need stock replacements. And like you said "custom app" then I figure you have half a brain to know what you need/want then I would just give you what you want if I can, with a little prying because I am noisy and dont want you to destroy your car.
That is just the way I am thought I have changed tires, alt, starters and even helped put a side window in a car in the parking lot at my store. I want people to get their money worth in every sence of the maner and try to help them with it.
but yea we do get a ton of douch bags that have NO business even looking a tools.