Tapered goibs? On a cheap Chinese lathe??

I redid the dimples with a slot drill, as mentioned earlier, so they had flat bottoms and lined up properly with the screws. Being on a 60 deg slope, the top side of each dimple is deeper than the lower side, but I made sure thee was a bit of depth all round.
I'm currently awaiting GHT's thoughts on gibs from Pete, but in the meantime it occurs to me that there's another way to fill the gap behind mine. Make up a thin strip, like a gib, JB Weld it to the female side of the dovetail, put pins through it and into the gib proper as recommended by Pete and GHT for location, and continue the existing tapped holes for the adjuster screws through it.
The lathe did come with a central gib screw, with no lock nut, to immobilise the slide when needed. Wish I could fit one with a little handle, to save hunting out the right Allen key, but there's no room.
Andy