Try a repair before wasting more money!
Hi, I have a brand new Thumbler with no issues, HOWEVER, if I did notice leaking I wouldn't wait around for a replacement in the mail and have to pay a premium for it.
I worked as an engineer prior to my current field so trouble shooting cheap and effective fixes are what I used to be paid for.
Here is what I would do. (All materials can be bought at your local hardware shop home depot, lowes, ace.)
Make sure you have cleaned away any dry media that could cause poor fitting between the liner and gasket, (sorry had to say it). Solution is obvious for this cause.
1.) Pull the inner liner and look for cracks, pay close attention to the area around the threaded bolts, this is the most likely area where you will find wear. Spray on rubber sealer from the paint section of a hardware store will fix this problem get both inner and outer portions covered.
2.) Fill the liner with water up to the brim on a cookie sheet or pan (use the spray nozzle in your sink), wipe it down and inspect it every few minutes to check for seepage. Same solution as problem one.
3.) Inspect the circular gasket for cracks. If this is the issue, buy a sheet of gasket material, place the cylinder thread side down on top of it, (careful not to bork the threads give the top side a few handsome raps with a rubber mallet and use hand held hole punch to pop some new holes where the marks are from the bolts. Place the gasket material with the threads through your new holes and cut the gasket down to fit.
4.) Guaranteed fix. Pull the liner, spray a good even coat of spray paint (I used truck bed liner) on the inside of the metal tumbling cylinder to fight corrosion, mix up a stick of plumbers epoxy and seal up all the holes top and bottom where the hexagonal tube meets the hubs. Before it sets, put the liner back in and press firmly against all holes to seal it up. Clean away excess that has been extruded to the outside. Optionally using this in conjunction with solutions 1, 3, or both, will make it better than it ever was to begin with.
Hope this helps!
