My boss told me to use a 1/8 inch spacer for a 10 foot shower door install last month, and the whole thing rattled like crazy.
He said it was 'standard practice' and wouldn't listen when I mentioned the weight. Sure enough, the homeowner called two days later saying it sounded like a train going by every time they touched it. Had to go back, pull the whole unit, and reset it with 1/4 inch. Lost a whole afternoon. What's the biggest spacer you'd use on a door that size?