Hi, I need to lubricate the HG15 Linear Bearings on my new quenbe CNC. BUT there is not enough room to fit the Silver mini Grease gun in the gap, between the rail & gantry, without using the DIY extension tube I made. And when I try to use it, the silver tip is pressed out with the pressure of the lithium grease. And the black gun, fits in the gap, yet is to weak to force any grease through it's tube. Whilst separating the HG15's from the gantry is doable. That can only be done after the plastic pieces holding it on to the lead screw are removed. Whilst it would be ideal to lubricate the HG15's without removing them from the gantry. I cannot figure out any other way of properly lubricating them. Is there a better & easier way to lubricate the HG15's?