What is the test for internal binding in a personal injury claim?

I find that the amount claimed in the present case distinguishes this claim from those in the other proceedings. Although I have found in previous decisions that internal binding is overhead (Bujnowski v. Canada, 2010 FCA 49), I find that this claim for binding and the jurisprudence provided leads me to revisit this issue and not simply disallow it as overhead. On the other hand, I am not able to allow it simply because claims for binding have been allowed in the past. I will therefore reach a determination concerning a reasonable and necessary amount to allow for internal binding, based on the circumstances of this file.