The June Taylor has a very long long time you are supposed to shake the can to get the contents fully mixed. Is it possible you did not shake long enough. Also less is better than more.
The first can I bought I bought June Tailor ...thinking a reputable quilter put their name on it....and ....used it and thought "I wonder what every body thinks is so wonderful?" I gave several more brands a try and June Tailor is the brand I like the least.