I know you have to be careful how you present things at times, I've been there myself. In my experience though, if you stand your ground on doing things the right way and not cutting corners the boss will ultimately respect you more for it. I had one boss who I used to constantly argue with over not cutting certain corners, at times I even refused to do things his way. But, in time, I was his right hand man who's work he trusted the most and he stopped second guessing my way of doing things. Sometimes he'd later admit that my way was better and he was glad I was so stubborn.