As I am continuing to learn BW printing I decided to try a cold light head. I had a chance to get an old Aristo head for free, so I thought I'd give it a try. The head came with a power supply. It seems to emit blueish light. I mounted it on my Beseler 23c III and ran a few tests. Overall, I really like the results with Ilford Multigrade RC paper. I used a contrasty negative, without multigrade filters. The tonality was really nice, with lots of highlight and shadow detail. However, the light intensity is not consistent. It varies from exposure to exposure. So my question is whether there is anything that can be done about it, or should I just forget about and use my condenser head instead. Thanks!