New balljoints and tie-rod end grease?

I ordered all new components and as many know they are sealed with no zerk fitting. Are these supposed to be sealed and pre=greased or are they dry and designed to be greased with a needle?

If you grease new ones do you grease them before installing and let the grease squish out and clean it up or grease it after installing them and they are compressed?

 

Right.. I get logic says they "should " be.
Question should be has anyone verified pre-greased or when putting them in did you grease or not and did you get any clunking if you did not?

 

I can remove the clips and pull the boot back? I removed the clip to take a peek but the boot was on there very well I assumed they were additionally bonded on.

 

yep. im not keen on removing the boot and having it not reseal and not down with injecting through the boot, seems like that would contribute to failure. if they knock ill deal with it then.
thanks.