I thought last Spring that the Coleman canister I bought was messed up, as the first time I used it with my Pocket Rocket, very little fuel came out. I unscrewed the PR, reattached it and it worked fine. That evening. Had to do it all over again the next morning and this was the morning I had to start a three night trip. So anyway, I finally used up the Coleman branded fuel since that was all I could get at the time and switched to a brand new MSR blended fuel canister last weekend. I had to unscrew the PR twice over the weekend to get it to work as no fuel or very little would come out until I did this procedure. Anyone else have this issue? I can't send it back to MSR yet as I still have another trip or two that I can use it on this Fall until it cools down and I can then switch to my Internationale. I could take it back to REI, but I feel I should deal with MSR directly.