Atari ST connectors (was: Atari SIO bus connectors found)

A cetnre punch applied oliquely near the circumference often works too.. The wookshp manual [1] I have alongside me gives the removal method as drilling a hole down the middle and then using an easy-out. Does that term exist across the Pond? It's a tapered tool with a left-hand thread on the otuside. Put it down the hole, turn it anticlockwise with a tap wrench [2] and it bites into the sides of the hole and turns the shear-head olt anticlockwise too. I have neve seen RH thread easy-outs for removing ledt-handed shear-head bolts, which suggests that said bolts would be a little harder to remove [1] Yes it's a car manual. The bolts hold the ignition switch/steering lock to the column. I have neve seen such bolts used in classic computers [2] That's tap as in 'tool for cutting female screw theads' -tony