So, I have noticed my Male pastel has a slight whistle when breathing sometimes. I have them on the reptibark red bark, finally got my humidity down from the high 80's to the low 70's of about 71% usually. Temperatures are 90-92 warm side and 80-83 cool side in all my tubs on the rack. No other snakes have this issue. He does not have any mucus or anything wet/dry liquids coming out of his nose. Any thoughts???