Loving the game but have ground to a halt. I am still puzzling over the experiment but have got to the garage and the shed and used the spade. can't understand the balls and have stood around fiddling with the swingball to no avail - I have a feeling this is a red herring! completely stuck with the iron studded oak door which isn't unlocked with the rusty key and also stumped by hatch - do I need assistance with the stepladder? Any hints to get me moving again are gratefully received.