I will agree that the sliders are not as smooth as they could be when new but I used 1 drops of 3 in 1 oil on each slider they have been smooth as butter going on 7 months now.
Far be it from me to be a stirrer,,, but I had read that drops were inconsistent and not to be relied upon - shouldn't we use a graduated syringe ?

And +1 on the congrats to jbarrick