i'm working on a friends car and his front left fork on the bottom of the strut won't let the lower bolt go. it's wedge in the bushing. we've tried everything from insane amounts of hammering to penetrating oil soaking in over night, to even starting to drill it out which hasn't worked. you can't even rotate the bolt more than a 1/4 turn. any ideas? this one bolt has taken hours and hours of time and i've never seen anything like it.