Try a higher end butane bro. I went through the same thing a few years back.

Personally I use Vector Quintuplus Butane , it is filtered five times, and you can launch a shuttle with it.

There are some other high end brands but this is the first I bought and it is what I have stuck with over the years. I usually grab it at Amazon if I can't find it local. Maybe a few other members have some brand suggestions.