I think acetone is one of the very few spirits commonly avalible that will do the job but it is nasty stuff both the vapors and its ability to go through the skin like its not even there so do be very careful with it and avoid any contact if you are at all sensitive using resistant gloves.
Hooking edges ad lifting working the spirit in does work well on large globs but you will find just thin tracks what does require pressure all the while keeping the surface wetted out with the actone and some vigorus rubbing .
Do try to avoid seams with the acetone as this can lift these areas.
John