2006 Tucson brake calipers
 

Hoping this is an easy problem for someone as this is the first set of brakes ive seen with this feature.
The front calipers guide / slide pins have a rubber bushing on one of them.
Im fairly certain that they came from the lower hole but just want to make sure.
Ive also noticed that they are extremely stiff, but i dont have the right grease so i have to get some later today.

Does that bushing go on the lower pin?
Should it slide VERY easily or should there be a little bit of resistance?

THanks