Anyone the numerical chance of getting a Unkempt Harold from Torgue Machines?

I was wondering if anyone knew the chances of getting a UKH from Trogue machines… I’ve been farming Savage Lee for a while now and still havent gotten one on UVHM. Please help

The last time I farmed the machines it took me about 20 times of quitting and saving to get one but I did get one. I actually got a few of them before that but was holding out for the Double Penetrating.

Just one thread, please.