ALL pots scratchy in ea tremolo

[willie]

Hello,
I am very new and just finished my first EA tremolo.
Everything seems to work ok except for the pots, all of them create a scratchy sound when adjusted.
Do I need to try all new pots (these ones are brand new) or could I have just messed them up while soldering?
Maybe I have to put a rubber washer against the metal enclosure so it's grounded better?
Any help would be appreciated, this is my first project and I want to get it right so I can solve these problems in the future!
Thanks!

[Pushtone]

That does sound a little strange, that all three scratch.

I would check for DC voltage across the pots with a multi-meter. There should be none.

I don't suppose you drilled the case with the pots in there? I did that once and ruined the pot will metal filings. 

You can also try spraying in some electronic contact cleaner. I think the name brand is CRAIG. Radio Shack also sells their brand of cleaner.

Good luck.

[willie]

Added a little "cushion" between the rate pot and the metal enclosure, and that stopped the scratchiness in all three pots!
Is this just a fluke or did it prevent the enclosure from becoming part of the circuit?
Maybe something else changed that I didn't notice while I was doing this but it sounds alot better now!
Thanks for the help.

[markm]

Happy Endings are always nice no matter how they are acheived! 

[Pushtone]

The metal case of a pot is not conductive to the circuit.

But glad it working for ya.

[rockgardenlove]

And for the record, that cleaner is branded CAIG. 

[Barcode80]

The metal case of a pot is not conductive to the circuit.

But glad it working for ya.

but the shaft is, and likely was grounding to the enclosure. there is a wiring problem somewhere still, but as long as it works, don't mess with it!