Jacking up GT with trolley jack

[oz3litre]

Thanks guys. The drilled discs were on the car when I bought it. I haven't gotten around to having another look at it yet. My mechanic took the callipers off and took them apart and painted them so I assume he would have greased them - he is extremely thorough. I will probably take it round to him and get it up on the hoist to look at it. It is not a serious problem - just annoying now that I am aware of it.