I purchased a gallon of Total Boat water-based bottom paint and used a bit over half the gallon last year. I sealed it and turned it over to keep as much air out as possible. When I opened it the other day, the paint had the consistency of cheese curd or soft cottage cheese. It stirs easily enough, but the lumps will not smooth out, even when stirred mechanically. The lumps will squish between thumb and forefinger. so they are not hard, but they make the paint useless. (Not happy)
Can you tell me the cause and the fix, if there is one?