This is NOT correct Sam. It's been a while since a replaced mine but I'm certain the airbags where supplied with new brass ferrules. The reason you are instructed to gently tug on the lines is to make sure you've correctly fastened them to the bags...which will be impossible to do without the ferrules (brass retaining rings) so if you didn't get any in your kit then I hope you have not thrown your old ones out because you will have to reuse them.