Vox AC15C1 - Increase reverb dwell

[Halkbi]

I have an AC15C1 on the way in. Haven't played it (got a good deal on a used one) but judging from YouTube, the only thing lacking seems to be the reverb, which people on forums describe as weak no matter what tank you put in it. The previous iterations (the AC30CC2 and CC1) had a switch to drive the reverb harder for more of a Fender-like dwell, but that was ditched in the current models. The C-models also don't share the same circuitry for the reverb stage. It's very similar, but different enough that the dwell switch found in the CC-models can't be implemented here. Here's the schematic for the reverb circuit of the AC15C1:



I don't understand whats going on with different signals hitting the core vs the shield on the reverb input stage, but the only thing I can think of that might increase the reverb dwell would be to increase the value of R30. Did I make the right conclusions? I could always increase the value of R52 for an increased level at the reverb return stage, but that would give a different effect than what I'm after. Any help is appreciated!