I had big problems with multi in the beginning stringing TC95 and TC100 in a hybrid configuration.
However I finally figured out how to string these bad boys - this is how I do it:
1. When installing the last mains don't tie them off, but clamp them instead, I use two of these:
www.tennis-warehouse.com
2. Install the crosses, two holes will only be blocked by one string at the end, and you can use this tool (not absolutely necessary, but can be a help)
www.tennis-warehouse.com
3. When the last crosses are through the wholes, you can then tie off the mains and then the crosses. Once you see it live, it makes sense.
Hope this can help you out.
Cheers, Toby