I can try, but Google and professional help are probably Solution #4 worked for me Surface Pen Pressure Sai Paint Tool SAI Developer(s) And please, I'm not a tech whiz, so if you continue to have issues, I'm not necessarily the one you should come running to for help. Bear in mind that even though I've found several solutions they won't necessarily work for you and these aren't ALL the solutions either, and if the problem persists perhaps you should seek professional help, as I am only an internet lurker who has depended on Google and other sources. I think I'll run down a couple of solutions I've found and stuff. I also use a Wacom Intuos Tablet Medium, (I very recently upgraded from a small) though I doubt that will be to much use to you. Also, this is pretty much Windows 7 specific, sorry Mac users. Just to be specific, this is mostly for Wacom pen tablets in the program Paint Tool SAI.
Pen-Pressure Sensitivity Not Working in SAIIf I hadn't figured out the solution to this problem then this would probably be a cry for help, but instead I hope this will be a bit helpful.