I am having a bit of trouble getting my head unit out! after go i removed it doing a job, but not i cant get it out! ive got hold of a second set of stereo tools and it still wont shift! any ideas how to get it out? ive removed the trim under the steering wheel and could see the fastenings, but couldnt really get to them very well, and had to put it back together as something more pressing came up. the head unit is a double din (symphony?) in an x reg B5. help!