Thanks. It looks like the characters sent are rather inconsistent. With backspace, I got a collection of F3, F7, backspace, tab, T, Y, [, ], capslock, numpad 4, numpad 5, numpad 6, left shift and left windows key; yet I also got F3, tab, T, Y, ], capslock, K (sometimes) and left windows key.
For \ I got ], \, A, S, D, F, J, K, L, ;, right shift, numpad 1, numpad 2, numpad 3, numpad enter, right windows key; also A, S, D, F, J, K, right shift and right windows key.
For enter I got ], Z, X, C, V, M, ,, right control. I also observed that F9, F10, F11 and F12 also have similiar problems.