I upgraded my Stage I’s hardware yesterday and discovered a small problem afterwards…the fine tune no longer works. There’s no reason it shouldn’t work, the board that the pot is on is free of cracks or scratches, all the connections are fine, there’s nothing visually wrong. Perhaps a component on the replacement board is faulty? Anyone else have this problem? Amos, any ideas?
You might have the Tuning set on ‘Auto’.
D’oh! 
Yep, that was the problem. Thanks Maskin! I owe you one!
No problem! 