I have just bought an early De Vere 504 and have 2 questions someone might be able to help with.

1)The stabilised power supply is not working but since I will only ever use the enlarger for black and white I am thinking I can just run the fan directly from the mains and the bulb from a simple 24v lighting transformer. Can anyone see a problem with this?

2)I should like to give the colour filters a good clean and I found a thread somewhere which said they can be removed from the head 'very easily'. Well it's not immediately obvious to me! Can anyone help?