This is all interesting, I was looking closely at lifts but never really got too far. Posts in the way, car on top dripping oil, "other parties" (we know who they are) negotiating posts etc so now I've decided to knock a whole in the wall through to my workshop instead, gives me that extra space but not ideal :+
I'll follow this one with interest though in case I need to look at them again in the future. Good luck!