yes i have the driver here!
onedrive.live.com/?cid=57b8c10…but to actually get it to work on sai, what i figured out myself is that you need to plug in the tablet first and then open sai, and if it doesn't work, close it and go to the arrow pointing up on the taskbar (i think it's the hidden icons one) and click the green tablet icon twice and then unselect then select the 'support tablet pc' and click apply
do a quick pen pressure test and then click OK
open up sai and then it should work! this is wht happened to my turcom 6580
but delete the previous driver you have or else it won't work! i hope this helps!