OC Car Help

I am trying to degree my camshaft, but I am having readings jump around. I am doing the intake centerline method, but my camshaft is 108 ICA, but I get readings of 90-95. I was wondering if there was someone who has done this and could help me ASAP. I have the tools, but if you have them also and are not the magnetic base it would help greatly. Please let me know!