is there a better way to add SCCONV in resnet18

[lxgen]

I try to add scconv in resnet18.
As show in th pic, conv4 and conv7 can be seen as the two split blobs.
Compare to resnet50, it seems lacking F1 conv as shown in your paper.
And this architecture hasn't got better performance, maybe it seems I don't get a better pretrained model.
Is there any better way to add this trick please?

[lxgen]

[Danica-zc]

Have you finish this task for add SCCONV in resnet18?