Author: Chris P
Date: 2007-12-31 16:15
Check the cork on the small lug soldered to the C# cup - if this has worn through (which is very likely) it could be causing the adjusting screw on the end of the C# overlever (the bit that arches over the low B key barrel) to foul so it remains open. The adjusting screw could also have a burr or a square tip, or if the tip isn't showing, the end of the adjusting screw pip could be catching - as it's got an internal thread, the end could be sharp and digging into the cork on the C# pad cup.
Or the C# touch spring could be weak, or the C# cup spring could be heavy.
Are you competent to taking the C# key off? This is the last key that goes on and is relatively easy to remove, but remember to disengage the springs before removing the C#/Eb keys, and replacing the springs afterwards without altering the tension (and oiling the ends of the steel before putting it back).
Remove the lower point screw securing the C#/Eb touches, hold the Eb pad open (pressing the adjusting screw end to open it) and then ease the C#/Eb keys off (they're both pinned to the same steel so they won't fall apart), and check the Eb key spins freely on the steel. Check the pillars as well making sure they're square on with each other. While the keys are off, check the condition of the tip of the adjusting screw on the end of the C# overlever and the condition of the cork on the C# pad as well.
Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.
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