How do i get the door back up to it's original position? It has dropped slightly so it sounds like a gale to howling on the motorway as the seal won't seal properly anymore

 

It may be as simple as one of the bolts on the hinge may have slackened, just gently try each bolt and you'll find the loose one, then just tighten it up. (Don't overdo it though as they may snap). Bit of copper grease on the hinge arm wont do any harm either it'll keep the opening and closing of the door nice and smooth.

 

Cheers, i'll have a look in the morning and hopefully thats got it!