Is a hardtop for the manx screen suppose to go into the slot on the outside of the windscreen frame or fit under the frame so you cant see any of the top frame showing, if that makes any sense ?

They originally fit the slot but I don't think they do any more!

They fit under the frame.
So they touch the glass.

All done with a bit of manipulation , pics to follow cause I know how we all like pics 

That looks good, saw Chris today and he said you were having a roof made in flake