Spring RTS Engine

I'm trying to make a small edit to BA5.91 where nearly all the weapons have terrain deformation like in the old days of AA2.11 or so. I'm testing with the ARM_HAM weapon on the Thud. I tried editing the cratermult and craterboost fields, but I got no results. I then tried replacing the weapon information with the info for the Bertha weapon, and nothing in the game changed. I'm using the modname.SDD folder instead of zipping, and I know I'm using the right mod in SpringSP because I changed the modinfo for clarity. I'm just editing everything in Notepad, in case that makes a difference.

My question is, how do I make the changes to the weapon files show up in-game? Thanks for your help.

Are you sure you tested on a map that is actually deformable? A lot fo spring maps have infinite hardness to prevent foobarring.

Make sure impulsefactor is not 0.

WELL it decided it was gonna work today for some reason, so the mod is made and a test game has run smoothly. You can get the mod at Unknown Files. It won't let me post a link because I'm too new, but it's listed as CraterBA under Mods. Please use responsibly.