I'm sorry, I was not paying close enough attention to notice that you said you did not have series parallel switches. And when you said ptone in series, I assumed that meant ptone coils in series with each other. That is what you are calling ptone in series internally. I did not think you meant ptone in series with another pickup, because I figured if you meant that, you would have said that. (Also, why do that, because it defeats the purpose of the P-Tone.) Sorry for the confusion. That will teach me to not respond to talkbass emails when I am in a meeting at work. The perils of multitasking.
By the way, this thread got me to thinking. If I were to have a bass with a p-tone, I might do a 6 way switch something like this:
1. Bridge solo, single coil (J tone)
2. Bridge solo, both coils
3. Bridge+Middle series, both dual coil (MM tone)
4. Bridge+Middle parallel, both single coil
5. Middle solo, both coils
6. Neck (PTone) solo
Or maybe replace #4 with Middle solo single coil.