Are metal casings on electro caps a short potential?

[momo]

So I just finished putting together MarkM's Schaller tremolo version, and as it is usually the norm for my newb builds , well it does not work!
Absolutley no problem there...I learn better debugging than reading!
So the question is because I tried to fit this layout on a small SmalBear perf board, Ah man its too bad I dont have my camera to show you the worlds tightest layout!
Anyway I learned something there....you dont have to make it so tight!
Im positive there are no shorts on the soldering, but still there is absolutley no voltages on Q1,2,4. Q3 has 9v at the collector coming from the batt, but thats it!

So im thinking, the components are quite close together, some resistors are standing with exposed leads.So are electro caps body causing a short touching resistor leads?
Im also positive that there are no resistors shorting together.
Thanks again!
I hope pretty soon to be able to help "newbeeyer" people with simple debugs, to help unload the debug workloads for you pros. I just need a couple more weeks I guess
Like I said, simple debugs

[petemoore]

So are electro caps body causing a short touching resistor leads?
  I dunno, never had that, but I suppose if it's bare metal, I tend to keep leads away from anything else conductive other that shown connections.
  But you can test that easily enough with the DMM in beep mode, just test anywhere you think a short may be happening, after verifying there is N/C shown there on the schematic.

[DDD]

Usually electro caps' casing is wrapped into thin plastic film and nothing happens if it get in touch with other components' terminals. But at the same time the film may be melted while one solder other component terminal, e.t.c.
Most of electro caps have considerable leakage between their "interior" and casing. So it's strongly recommended that no conductive parts are in close contact with cap casing.

[momo]

Ah man Pete, I wish I had come up with checking continuity myself , Ill do that for sure....gotta go for now