Help with Psa Aerial Momentum?

[LintyX]

Hey, I need help with an issue some Movesets have. Waluigi (God bless his heart) when I jump forward and let go of the stick, he stops dead midair. All Vanilla Project M Characters carry some kind of momentum forward. The same goes when You Wavedash off of a ledge, He falls straight down instead of going diagonal down. Now I know Waluigi is a very vertical character, but it really turns me off when I play him. some other Psas on the vault do this. My question is how would i fix this in a Psa editor? Which Attribute would I edit in PsaCompressor?

Any help is greatly appreciated.