Folks - I have an issue with the fuse housing. In the past few years I’ve changed the fuse for either upgrade or maintenance reasons. Last time I did this, I had a difficult time keeping the housing all the way inserted into the rear fuse outlet. Today, it won’t stay in place at all. (Yes I’m using the correct fuse.) Has anyone had this problem? I’ll be damned before I send the preamp to Colorado for a diagnosis and necessary repair. Thank you. - Jim