That is excellent advice from mister lee, as how can you know your problem without seeing you. If you try, it becomes like two blind men grooping over an elephant and trying to describe it.
You said the tip goes to the left, at impact, that could mean you have tighten your grip and twisted, both are bad, so lighten your grip and try to shoot, or shove the shaft straight down the line at impact. Try to load the wrist, cock it back, then flick it into the shot.
joe davis would rub his cue on his ribs, which gave him a stable repeating platform, but the hand comes into to jam into the ribs, as you describe. This is good for normal shots. This is a fine method.
When you have to come with a shot, a big force follow or power draw, you need a 2nd stroke, let the cue hang naturally off of your ribs a couple of inches, just move it to the right, so you can follow through a foot if you wish to and clear your side. You will need of course to drop your elbow, and shove the cue down the line, keeping the shaft parallel to the table bed, there will be some that will tell you not to do that, you then ask them, why then do most pros do this, and at impact, the tip begins to rise up slightly and does not dip down, as all of the early Hof world champions did on follows. On a draw, there the tip slides into the cloth.
