As the least knowledgeable skier, let me copy some stuff from the web.?See especially number 2.? No matter what the wax, a ski base should have structure or texture.? This is actually what allows the suction created by the ski melting the surface of the snow to be broken.? May not be very noticeable in really cold weather becuase not much water is created by the friction, but can be very noticeable if the snow is already near the melting point of ice.? i think a warm weather wax also helps in this, but your case sounds like a lack of structure, i.e a base grind that was done on a machine that couldn't grind in structure.
1. Your ski bases must be able to absorb wax. If the bases have been overheated in the past with a overheated iron, the top layer of the bases will have been melted over, effectively sealing the base up so no wax can get it. To a lesser extent the same can happen if the bases have been exposed to air for a long time -- the P-Tex oxidizes and dries out.
What fixes sealed or rough bases? Elbow grease. There are many great articles on this subject, one at the Star Wax website and another really good one at The Master Skier. Basically, you use sandpaper to take off a thin layer of P-Tex, once again opening up the pores. Use 80 or 100 grit aluminum oxide sandpaper mounted on a flat sanding block. Run the sandpaper down the ski from tip to tail about 100 times.
2. The bases also need to have a structure or texture on the base. Skis glide more or less due to a tiny amount of melted lubricating water due to the friction of the skis on the snow. But water has a tendency to create suction on perfectly flat, smooth skis, thereby slowing you down or making your skis a lot harder to turn. What you need to do is to roughen the base so it is not perfectly smooth -- breaking up the suction. Kind of like car tire treads channeling water away from the tire.
And that sandpaper you just used in Step One solves two problems -- it will unseal your bases and create a structure. You could also have your skis stone ground (expensive, but the best), or buy a structuring tool or rill bar that actually cut small grooves in your ski bases (Tognar Toolworks has these), but these are more expensive. If you the sandpaper method and live on the west coast you want to use coarser sandpaper because our snow tends to be wetter. The wetter the snow, the coarser the structure.
But using sandpaper creates another problem. Read on.