Yamaha purple log alto. The horn is new to me, and my tech is away for the weekend. I was having a problem with the Bis 1-4 fingering being muffled and flat, and I was told to adjust the lower screw that holds the G# key down (don't know is this is the correct nomenclature, but I am hoping you know what I mean-it's the bar with two screws in it, one screw towards the mouthpiece, the other towards the bell in the middle of the instrument). Anyway, I did adjust the bottom screw, and now can't play the low Bb, Bnatural, or C#. I have identified that it's related to the G# key, since when the G# pad is raised, and I press the 4,5, or 6 keys, they won't play because the pad under the above mentioned bar is lifting a bit. I understand that the C# key is connected to the G# mechanism, which tell me why the low 3 notes are not working. Whew!! A lot of words to describe a simple thing. Anyway, what do I have to adjust to get that pad to not lift? Everything was working properly (except for the bis 1-4) before I started fooling around with it. Should I adjust the screw at the top of the bar? It was working properly before I messed with the bottom screw. Or, should I just be patient and wait for my tech to come back on Wednesday?