Those welds will probably not go anywhere, but they are definitely cold. You should bump up your welder (which welder btw?) and if possible, use thicker wire (0,45). If your gas mixture allows for it, try getting into the spray transfer range, it will surely give you more penetration. If your MIG doesn't have enough balls or your gas mixture does not allow to go into spray, try fluxcore. If everything fails and you can't use your MIG for the welds for the recovery points and such, you could probably just stick it together. Some 7018 and you are good to go.
Mikel
