The sorbo is plenty thiccc and fits the dimensions of the case quite nicely. I, like a few others, have the split top version of the Alt, so I had to manually cut the plate/pcb foam to account for this, otherwise, everything was a good fit.
I was using Halo Clears at the time and the pinging was still present but after lubing them and with the foam, my Alt is dead silent now.
Massdrop Alt Low Profile Foam Combo
Just needed a quick modification and it'll work great.
I got the high profile and the installation was really easy! Highly recommend these since the intentions were to definitely dampen the sound of the ping. And it worked! for the High Profile you'd just need to trim one of the foams. other than everything was great. If you're experiencing some pinging issue still, I'd suggest lubing your switches to see if that's the problem as well.
Cut perfectly for the drop alt
The foam is cut perfectly for this layout. I used it on my alt high profile. It does require a few cuts on two prices of foam.