Crate vc-2110r reverb mod?

[GP1953]

I recntly picked up a nice little Crate 20 club reverb amp and as has been posted on many fourms the reverb is quite weak. Is there a way to drive it better or to change out the tank to another size? I realy like the punch the little amp has but the reverb is quite lame.
thanks in advance
GP1953