Spatialist Reverb with momentary switch on dwell; any way to reduce speed of change?

[jhalton]

I have a Spatialist Reverb, and I added the mods with a momentary switch on the dwell pot to max out the dwell. I love the effect, but I find that when the switch is let go, the dwell goes back to the pot setting too quick for my taste. I am wondering if there any way to make the transition from the maxed dwell (momentary switch on), to the regular dwell setting (switch off). If you understand what I am saying...

I don't have much electronics knowledge, so I am unsure if this is even possible. But I figured I'd throw the idea out there....

 

[Cybercow]

Can you show the schematic of that specific mod? I'm thinking a cap and bleed resistor may do the trick.