Help with hf tumbler and stainless pins

[spook1]

I just picked up a dual drum tumbler from harbor freight and also 5 pounds of stainless pins. I even got some lemi shine. However I was wondering how much pins and water and lemi shine to put into each drum, as we lad how much brass. The instructions I found online are for the thumblers b tumbler and says to fill it with a gallon of water. Obviously my barrels together won't hold a gallon of water. If anyone with the harbor freight tumbler could give me step by step details on how much of everything you put in, I would really appreciate it. Basically I am looking for a beginners guide. Thanks in advance.

[Chickenthief]

Here's what i do:

Use same weight of brass and ss pins, i dont weigh just eyeball it.
I do not fill my tumbler more than max. 1/3'rd with brass.
I fill my tumbler up to @ 2/3'rds with warm water.
Add citric acid + detergent and tumble for 2-3 hours.