one of my best customers kills me every time she writes me a check. she wants copies of all the receipts for materials and questions, literally, what every screw, can of landscape paint, item was and i used it for. she owns several rental properties and i do work for her all the time but it makes my stomach hurt every time i give her a bill. oh she usually adds a little extra on the pay (rounds up), and gives me good recommendations but it drives me nuts. anybody got a customer like this? i think she just wants to be involved, but i always feel like it's a trust issue.