I am new to the darkroom aspect of photography and after my first session of printing last night it is obvious that my Krokus 3 enlarger leaks a lot of light, painting the ceiling and walls like a disco ball from the circular vents at the top. This obviously fogs my prints horribly and I remedied this by covering the head with my dark bag for shot periods of time. I still however get leaks from the cracks in between the carriers and the enlarger. I hear that this is a common problem but information is somewhat vague. Should I get some kind of lightproof tape or foam and seal up all of the cracks? Will this cause it to overheat or is it safe? Excuse my lack of knowledge as I have not lurked here for any considerable amount of time. I'm happy to provide more details on the enlarger and room setup. Thanks.