Logic Pro 9 Mackie C4 surface controller problem

Atlas

Logician
On my newly acquired Mackie C4, the Modifier buttons "Alt" and "Option" are changing the value parameter to "Full" in the Logic Controller Setup parameter window. They don't revert it to the default Coarse value (either when released or pressed again) as they should; these are supposed to allow either Fine trimming, or set value of the trimmed parameter to its max/min or zero position while using the V-Pots... To circumvent the issue, I have to go to the Logic Controller Setup page and set back manually the value from that wrongly sticking Full, back to Coarse...

That new C4, despite what is advertised on Mackie website as available firmware (either v.1 or v.1.2), my unit display a version 3.00. Am I missing something, or is it relevant to the above issue?
 
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