Got this monster and connected it to a conventional timer. Doesn't seem to have the will to cooperate. It seems to me that it might need a dedicated timer... Does anyone know how it works ? It seems like a great enlarger, but there's lots of buttons and nothing happens when I push them. The lamp goes on only when I push a button labeled "Focus" but it can't be used with the timer (in a mode that will allow me to use the time I choose...). Is there maybe a manual somewhere on the web?