Reverb troubles with my '77 Fender Super Twin

[HanTheGibsonKiller]

Hi you all, i am new here. Just a happy guitar player that wants to keep my amps working.
i have a question about my '77 Fender Super Twin reverb Amp, the one with, 6 x 6L6, 180 W and the strange fuzzy distortion.
Somebody nicked my spring reverb, and i don't know which one i have to put in the amp. i tried a spring reverb which works in an other fender amp, but it doesn't work in this amp. Just get a really tiny bit of reverb when i turn it all the way up. There's some kind of reverb stage with strange tubes: 6C10 and 6CX8.
I don't know if there's a special spring for the amp, or if i can just buy the 2 or 3 spring reverb tank and there's another thing wrong ... old tubes or ... ?
It would be great if anybody with some experience / knowledge could help me out here,
 Cheers Han Ernest!

[EL34]

Posted in wrong board... moving

[sluckey]

The standard Fender reverb unit, Accutronics 4AB3C1B, should work just fine.

[ckilgore]

New tanks are shipped with foam under the springs and transducers.  Did you remember to remove that when you installed the new tank?  Ask me how I know?

[HanTheGibsonKiller]

The standard Fender reverb unit, Accutronics 4AB3C1B, should work just fine.

ok, thanks!