Hey guys, Ive had this head for a while. When I first got it I retubed it with tung-sols (both pre and power sections). I recently really cranked to see what its got, and the red clipping LED kicks in indicating preamp clipping at about 4.5 on the channel 1 volume. I use active basses so I always have the 6dB pad in. This seems like a low level for the Red LED to kick in. Anybody have any experience with this?