I've just bought one off eBay and there appear to be a couple of problems.
Firstly, the handles won't stay fixed. They tilt when a little force is applied. A quick google shows that it has been an issue but it is one I can live with.
The other problem is that the seat won't stay upright or in the recline position. It slips way down the back of the frame.
I can't find any pictures online that clearly show how the recline part and the mesh part should be attached to the frame.
Can anyone help before I sell it for spares/repairs?