I think this is the appropriate place to put this...
Here's a spreadsheet I put together to roll cluster hits, for a few reasons:
1. I wanted to speed up this part of the game (love my LBX 20, afterall) but a Box o' Death approach wasn't doing it for me,
2. I've heard there's a good rolling app on Android, but I have no Android devices, what I do have available is a Surface tablet with MS Office,
3. I wanted to be able to customize and use my own cluster hits table (as has been done by others before me, I tweaked the curves more to my satisfaction), and
4. I just like playing with Excel, and wanted to see if I could produce something I was happy with.
I am now happy with it, so I present it here in case anyone else may find it useful. Naturally I have tested this, but of course may have missed some combination of variables that will return errors, so if anyone does use it and finds problems, let me know. Un-hide cells "I" through "DK" if anybody wants to see the cluster chart I use, or input their own (there's an option to select the custom or standard chart), or just see the way I set it up, if you can make sense of it. I tried to label it so that I could remember what does what, but it's probably not created in the most efficient manner.
Oh, and if anybody actually finds it useful but wants a different feature or something else added, let me know and I might try to do it, I am no Excel god but I do like to play around with it.