So, lately my Youtube recommendations have been inundated with PE foam mod typing tests, and I'm getting upset by wanting to do it to my own board. I have a custom fullsize already with all the mods I could think of just a few months ago, and I already really like how it sounds. I really can't be assed to tear it apart just to put foam in there but I want to so badly if it would add to the sound the way it does to other boards.
The biggest question I have is whether it relies more on having a stiff plate, or flexible one. I think a lot of times the sound tests are with boards that have polycarb/FR4/flex cut aluminum plates, the plate in my board is brass so if a stiff plate is bad then I really won't bother. I'm also just not great at desoldering and worried I would mess up the PCB or something in the process and really don't want to do that, but this has me considering getting a desoldering station to do it.
I also know about the tape mod, that would be easy enough to try in the mean time but I know the sound signatures are different and unfortunately PE foam really seems like what I'm after.
Here is how the board sounds already for reference: