If you're using a cold light head, the upper bellows shouldn't be extended at all. 2.5 inches seems too high (mine flattens to about 1 inch). The head should be as close to the negative carrier as possible. I don't know if this is having any effect on your exposure times, but the upper bellows is used to move the condensers, which (obviously) you're not using.
It sounds like you're using the format gauge (the little red arrow) on the right side of the upper bellows, and setting it for 2 1/4.It seems to me as if you're not set up properly.
Last edited by eddie; 02-05-2012 at 12:44 PM. Click to view previous post history.