Need some help ok so when i burn half tones I cant seem to blow it out properly it keeps some of the dots and blows out most of them as well small print like if i want to print out tagless tags half of the print blows out some washes out and some the image shows up but i cant wash it out. I have a exposure unit it has 8 light bulbs and i believe they are 15w each and im using Murakami HV emulsion. When i burn my halftones its usually for about 2 to 2 1/2 minutes and for everything else about 4:30 to 5 mins. I double the film as well...can anybody give me any advice or help me out please???