And be sure you are using pliers with a crisp, square, clean tip, or you are just causing yourself grief. You need the right tool for this job, not one you hope is "good enough," else you will be (a) looking for the clip you just launched somewhere [the plastic bag idea works here], and (b) you will gouge up the clip which may make it more prone to breaking once the engine is running and the clip is screaming back and forth right next to your old, irreplaceable liner....
Dave