SO I built my Mission 5E3 a while back and it works great. Haven't actually used it in the last few months, Any who, I pulled it out today and it is making a slight sizzle-crackle sound. It is not loud but annoying. It seems to happen when the guitar is up. Doesn't seem to change the amount of crackle with regards to amp volume.Any thoughts about where to look? If I remember correctly, it is probably a dirty joint. Just wanna be sure before I waste more time.