|The front hatch on the RL28 (with 3 or 4 bars attached to protect the glass) is "Houdini" brand, made in the UK I think. |
My local chandlery (Muir's in Brisbane) says the hatches and parts are available but VERY EXPENSIVE now! They are also renowned for leaking as they age (which I have certainly found).
The best remedy is to replace the hatch with a different type - both expensive and time consuming, but Sikaflex make a glue for bonding glass and aluminium which stops the leak.
Sorry I don't have a cheap solution for the handles.