I don’t know where the missing parameters are, but note that the number of parameters in conv layers is usually tiny compared to linear layers:
print(sum([param.nelement() for param in model.conv1.parameters()]))
> 6656
print(sum([param.nelement() for param in model.fc1.parameters()]))
> 10748232

So I would check, if morel linear layers are used or if the shape might be different.