Hacking Extracting with WiiMod - Safe?

[Teffy]

I'm upgrading to a Wii U in a few days, and I want to transfer my Virtual Console Inject library to my Wii U. Unfortunately, I've lost most of the .wad files and want to rip them from my Wii. Will I have issues using WiiMod to rip the .wad files from the system memory? I've noticed a few files (Mother 3) doesn't match up to the expected size and I want to know how well WiiMod actually works. For reference, here's a comparison of a few files:

ActRaiser: 101 blocks, 22,830k size on card
EarthBound (custom channel with sound, etc.): 114 blocks, 23,619k
Demon's Crest: 39 blocks, 14,032k
Mother 3: 169 blocks, 21,xxxk on card (Deleted because obviously wrong size, don't wanna risk a brick)

 

[worm28]

I have packet many titles to wad with wiimod and never had any problems i think you will be ok.