I have an issue where my enlarger has to warm up for a few seconds to be in focus. This make no sense to me... even if the bulb needed to warm up, how would that affect the focus? I have an Eiko PH140 bulb in there and have the same issue when I bypass the timer. I was also thinking it could just be my eye readjusting... but it's not. It takes 2 to 3 seconds for the grain to come in focus after a few minutes of not being used. I'm printing a lot of 8x10s from 35mm negs and with my lens stopped all the way down my full exposure time can be as quick as 1.6 seconds. I've taken to covering up the whole sheet of paper and running the lamp a few seconds before each print and test strip... but that seems absurd. I can't seem to come up with anything trying to google this problem... anyone with condenser experience run into something similar?