Hammond M all ocal amp

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I have this amp and a box full of octal tubes including many 6j5, 6sl7, 6sj7,and 6sn7 tubes and I am looking for suggestions as to what to build.
 

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I'm not sure about this particular model but the amp in my Hammond L series works as is as a guitar amp and doesn't sound bad either, with some simple modifications (tone stack, volume control, etc.) you could probably get some pretty excellent sounds out of yours.
 
I have decided that I am going to play around with the stock design and I could use some guidance on where to place the volume and tone controls. Can I put a volume pot between V1 and V2 or is that a bad idea since V2 is a CF? I have temporarily placed a volume pot between V2 and V3 and replaced the expression control with a pot and a few caps and resistors and it works. I have the field coil speaker but I wont be using it. I have a 1000 ohm 25 watt resistor in place of the field coil but it gets super hot, do I need a higher wattage resistor or is there a better way?
 
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