One other suggestion is - make a print from a negative that in the past you have had no problem with , then at the same contrast, print one of the negatives you seem to be having this problem. If the problem continues - then these "problem" negatives might be underdeveloped. Increasing your agitation will give you a bit more contrast. - eg - once every 30 / 45 sec. rather than once every 60.(posted 9191 days ago)