Vibrolux RI hiss

I have noticed that several of the Vibrolux RI amps I have played at the music stores lately have an annoying and loud hiss. This becomes more prominent when the Reverb is adjusted above "3". I asked one tech, and he said it was because it was a PCB electronics and not a PTP wired.
I wonder why Fender would even produce this amp with this much noise inherent in the design? Funny though, none of the other PCB RI amps have any hiss in comparison. Why is the Vibrolux different?
I love the tone and the light weight for the money (I know many think it is too brittle and sterile sounding and unlike the originals - I`m not a purest to that degree). But the hiss has got to go! Any suggestions on what it would take to sooth the savage hiss?

"I asked one tech, and he said it was because it was a PCB electronics and not a PTP wired."
"I wonder why Fender would even produce this amp with this much noise inherent in the design?"
Answer: They wouldn`t............The problem lies elsewhere.................

I stumbled onto an old post that describes this very problem. The Vibrolux basically has an attenuated reverb circuit when compared to a Vibroverb. There are only a few differences in the circuits of a Vibroverb and a Vibrolux according to the post I read (talking about reissues here only). The noise also comes from the fact that the Vibrolux has no feedback loop, thereby missing the ability to cleanup the signal.
I am no expert at this, and this may be a line of crap as far as I know. But one thing for certain, in a quiet room, the hiss is unbearable. In a noisy music store or with a live band playing, it is virtually no worse than the 60 cycle hum.
I like the sound of the Vibrolux. If these modifications that were describe work, then I would buy one in a heartbeat. But suddenly, I have redirected my sights to a Bassman Breaker or a `59 reissue. These amps don`t have reverb, but they sure are punchy clean with a nice breakup. The Vibrolux sound way too muddy when playing full lower barr chords through high output pickups (i.e. PRS Dragons, Texas Specials & 12 db boost circuits).

You have to first find out that the Vibrolux sold in modern times is **NOT** a re-issue at all. If you look closely at the model name, it`s called a "custom vibrolux". (not Custom Shop, just "Custom Vibrolux".
Fender played games with all the gain structuring in the amp and they all hiss like that. You can sort of address it by using tubes which are noise-graded. Other than that, you need to dig out a soldering iron.
Why would Fender do that?
Well, I could start a list of speculation on that subject, but rest assured, Fender indeed did exactly that.
PTP or PCB has nothing to do with it.

why they use the word "Custom" in it`s name.