TTX Grease Needle Size?

[jbncccb]

Trying to grease the lower ball joints on the Mevotech TTX line. Anyone know what size needle this might take. I tried the Lincoln 5803 and didn't appear to work.

 

[flan]

I never knew there were different sizes. The 3rd gen front driveshaft had that pos zerk, made a mess until I bought a true grease needle. Stuck that in the hole and ended the misery.