Hi All, i'm doing a headgasket job on my e30m3 and i somehow stripped the allen head srew holding the timingchain rail guide(one of the 2 bolts that holds this) what is the best way to remove this,any trick to the trade here? i've tried using a longnose vise grip but it's too weak to turn the allen srew-can't sqeeze a bigger one in there fearing damaging this expensive rail guide....any suggestions? thank you very much....rob