[Dragonharper]

Knowing what torch you have AND the type of work you is important i figuring out your issue. I agree with Otter's Flame, it doesn't sound like a leak. If I use my Bravo and keep to small items, marbles under 1.25" and small heart pendants I can get 10-12 hours out of a 125 CuFt tank. If I have to use the outer fire alot it drops down to 6-8 hours. If I use my Champion (both torches are by Bethelehem) I can drain a 125 Cu ft tank in about 4 hours. If you leased your tank you should be able to go to a larger tank for the cost of the oxy fill. If you bought them you are stuck. I just leased a 250 CuFt tank for $75 and $27 to fill, it costs $25 to swap out my 125's. I'm serioulsy considering moving to 330 CuFt tanks, and leasing a second tank. This is not a cheap hobby. It looks to me that you are in the ballpark for consumption. If you are working a lot of boro color your oxy usage will increase as you need an oxidizing flame to keep the color/COE true.