I've sent you 6 emails: three on 6/29; one on 7/2; and two today. Is this unresponsive?
Your first email suggested to me that you hadn't read the manual very carefully; nonetheless I carefully and articulately answered your question. Your response, copied and pasted:
so please tell the the settings for standard as you don't show that one,
also tell me what's wrong, using switch in out of phase position the tone controls volume, and not it just not apparent volume?
So it took a few emails back and forth to understand what your second question was about.
It turns out that the problem, apparently, is that if you position the 4-way switch's lever in-between the 2 and 3 positions, the switch cuts out. in other words, it's fine in all four positions, but if you move it to a position in between 2 and 3, it breaks the connection. Your concern (correct me if I'm wrong) is that if you inadvertently miss one of the detented positions, and instead move the lever to a position in between 2 and 3, then you'll have no output.
I stated to you that in nearly 40 years of playing I haven't found this to be a likely occurrence, but that if it bothered you then we would replace the switch. You accepted the offer, so case closed.