Hi Tim,

My suggestion was not the check ground on the 05 cap, but instead to check if the cathode resistors (2.2) and caps (5 uF) were grounded. however, judging by your new V1 and V2 pin8 voltages of 1.7 and 1.8 volts. It now looks like the cathodes are grounded, so forget about that. 

Just to make sure the signal is ok......can you hear the noise level (in the speakers) go up, when you engage the OD? From your description above, I would guess you can.

My suspicion is the wiring of the input jack socket, which can be a little tricky, with various connectors and all. For testing purposes, you could try to solder another (simpler) jack socket with a piece of shielded cable direct to pin2 on V1 and ground. Obviously, if that works, your chassis mounted jacksocket is wired wrong. 

Thats not the only problem:

You post about voltages: http://ceriatoneforum.com/index.php?topic=1401.0
is messed up somehow. I cannot open it.

Check the wiring to pin 8 and V1, V2, and V3

Are the 5uF + 2,2k properly grounded??

Check with you ohm meter from " - " on the 5uF cap to ground

Check te wiring on the cathodes (pin on V 1,2, 3.
Maybee you have colder joints?? Search for the error in this area

12ax7 is correct

Anode voltages are fine:
Those are the voltages measured on pin 1 and 6 on the tues V1,V2 and V3
hereto pin 3 and 4 on tubes V4 and V5.

Your cathode voltages are falulty
Those voltages on pin 8 on V1,V2 and V3 looks like your haven't connected these at all - Check again. Do the preamp tubes glow? do they have proper heating voltage between pi 4/5 and 9??

Bias
Is very far apart - maybe your V4 and V5 tubes are not properly matched, but if they don't hum or otherwise sound funny, you can keep using untill you get around to buying new ones.

You could browse the sound clips to hone in on the amp tone you like and take it from there:

http://ceriatoneforum.com/index.php?topic=29.0

Bump

@erwin_ve

OK, paralel the presence pot with a 470 ohm resistor and ad a 1,8 k resistor in series.
This will put the 8-10 on the old pot range across the whole pot range. In effect making 8='1' on the pot range  and  10='10' on the scale. 

No

Steven don't be like that :-) you know what I mean.

OK, paralel the presence pot with a 470 ohm resistor and ad a 1,8 k resistor in series.
This will put the 8-10 on the old pot range across the whole pot range. In effect making 8='1' on the pot range  and  10='10' on the scale.

who knows what value his potmeter is or maybe his amp has a resistor put in series with the pot, which limit/zooms its range to the 'working' range of a standard amp. Hence, it starts at '7' (on your amp) and ends on '10'

Could be

+1 - Don't really see the point in adding power scaling to a Dumble, which has a great low gain overdrive tone for a master volume amp. However, on a Marshall or Fender amp, I would find it usefull.
As always beauty is in the eye of the beholder - and if you're happy with your amps tone then thats great.

My presence know starts working at around '8' - and that where I think the sweet sound is.

Some amp builders like Henry Heisthl, Red plate amps, use a 'fixed' presence,  soldering in a resistor instead of the presence pot, with an ohmage value amounting to the presence pots ohm value at '8'.

I guess Dumble's accent switch, on his 70s amps, works in a similar fashion.

Your singing is quite allright bluesband singing (I play in a bluesband myself). Don't be shy about it!
We cant all be John Mayer or whoever.

I like the feel of your playing. Reminds me of the feeling in Jimi's live recordings. Great swinging band by the way.