Has anyone here ever had a problem with installing standard 6" recessed cans in a sloped ceiling? Sloped cans and trims seem to run about 4 times more than non sloped and I've used them for years in areas where the ceiling pitch is minimal(4-12,5-12).General contractors want cans but balk at the higher price sloped style. I couldn't find anywhere in the install info (Halo) where it said not to use them. Am being told by the AHJ that they are not listed for that use. Am going to call Halo and get their take on it. Thanks.