turntable indexing

I bought the indexing kit from Diamond Scale when I bought my turntable
I wil have 28 tracks coming from the table and I really dont want to buy the 400 indexing thing from newyork train supply. Has anyone ever built their own indexing system. You can buy as many blocks from Diamond scale as you want but they only have a 12 position rotary switch. Does anyone make a rotary switch that will do more postions?
It just seems I could develop my own system than depending on someone elses.

use two rotary switches…wire one of them then use the last terminal of the first rotary switch for the hotwire to another rotary switch…

Sweetness!!!

thanks
I knew there had to be an easy way to do it