colin, yes i hit almost a half tip of left side on every shot if i don't concentrate and use a long backswing.

i have very very very bad basics, but i do play ok and pockets are big in pool if you aren't shooting 8ft shots. (probably my memory and aiming compensates this partially? no idea, i don't think about it, i just do) its just that all the rest of my game has improved so much , i never payed attention to basics as i was improving allround.
even during long warmup strokes in noticed in the video's that my albow goes outwards a bit on every warmupstroke (probably why i play better with no warmup stroke at all). I could block the movement by blocking my elbow or only using short backstroke shots, but then everything feels blocked and I don't get the cueaction i want.
Now if i want to move beyond this level i'm stuck in for some time now, i need to improve my basics to get more precise on everything else. i have to watch my wrist, forearm, elbow, shoulder, pullback movement, body alignment and its a nightmare mentally. (its not simple pulling the arm back slowly so no jerky backswing movement is done) its just that everything is aligned incorrectly. pulling back slowly, trying to use only one muscle isn't going to solve that if your shoulder-elbow is not aligned. If i train it A LOT i can get it all working straight for a day or 2-3. BUt thinking of ALL that + patterns, positions, tactics etc + position + stress factor is just impossible and i have been playing a lot worse but i know this is a temporary setback if i want to improve.
a simple lag shot back and forward with center hit, comes back to my top maybe 3/10 if i don't concentrate on it and just hit it firm. when i concentrate and play slow maybe i can get it to 6/10. it's just SO many things aligned wrong, that its very hard to get them all working correctly aligned together. I'm a natural player. i feel the ball, i feel the angles, i feel the speed, I just know when i'm on, but my technique is very very bad. My best game is 14-1 and my worst is 9ball, why? simple the further the shot, the more important fundamentals become. i play a mean 7ft Barr table pool but i can't pot a single snooker ball. fundamentals. and every shot that needs a bit of more power or a longer backswing is just *crossing fingers and hoping i'm not misaligned to much* wich is a nightmare in straightpool when you are king at solving problems, bumping balls in position, opening racks, clusters etc (making the hard points), but you miss 80% of your breakshots/longshots due to unwanted movement due to increased speed (and leave open tables, the easy points).
but i'm working on it for 2years now, and wish i had an assistant behind me who could check everything for me

but it's improving, i just need to shoot A LOT of balls for it to become naturally, but often it feels like shooting with the opposite arm. very awkward, but when its all aligned it just feels like floating.
i'm thinking of investing in a webcam and a tv so i can watch myself on tv from behind and the side when shooting.