Gas welding is the base for all welding, this is why it is the first this you have to learn and pass to continue in class. If you go to collage courses. When I went to collage my book said titanium "could " be welded , that was the entire chapter. Years later I got to weld titanium and it is the best metal to weld in my opinion. Stick with it and one day it will just work for you. Some days my welds look like my first, I get so frustrated, then I see the problem and feel so stupped cause I know better.