The ice stem works pretty well. I put an inverted basket screen in mine to increase filtering.
I recall Epic saying in a post that they could make a custom ice stem with adjustable bowl if you contact them.
Here's an except from Andy (Epicvape) on another forum:
"If anybody would like a DIY Ice kit. (with adjustable screen) or Ice stem with deeper glass bowl, hit up Nadia at
customerservice@epicvape.com or just order the Ice stem, and mention which option you want, adjustable one or deeper bowl, all glass one in the messages. The price will be the same as the regular Ice stem, but may take an extra day or two to ship."