Is that another of the same teflon pads in the centre?
If so you may have stability issues ie the base might wobble.
Ideally it shouldnt be there and the weight distributed upon the three outer pads.
actually I have the EXACT same configuration...and NO the base doesn't wobble any way whatsoever...I also apply a little bit of vasoline on the sliders and the motion is buttery smooth.
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Mark
12" gso scope
Vasoline or anything oily is going to attract dirt like nobodies business . I strongly recommend cleaning it all off. You should be able to get acceptable motion without any lubricants.