That's what I was using till I noticed this on my 6 month old TC uniballs
They are pitted and pretty much trash.
Now I find out TC offers stainless balls, but they don't have that listed on their site (Camburg comes with stainless)
All the UCA uniball manufacturers need to get on the "ball" and put a threaded cap the top of the UCA and throw a zerk fitting in there. Pretty sure All Pro has just designed one.
Now I will only be using what Dan's selling.