Almost sure I am losing my eye sight, but here lately I have been tinkering around doing a little welding, and my welds look as if I just started welding. Well I have been welding for 55 years+ . Have any of you Bolters out there using a Hawk 240 helmet for welding? Mine is about 15 years old and I am not sure if there is a time limit on how long they perform or is there like a solar, battery that needs to be changed out I don" really y know the welder is a Lincoln 135 that seems to be really running good. Once I start my welding with clear good sunlight it acts as if it is smoking so bad you can't even see what you are welding. Anyway thanks..