I'm in the process of installing my shiny new CV18. I *think* that I've done everything right. However, I don't have, nor do I have access to a torque wrench. I used an allan wrench, and went round and round until everything is as tight as I can make it with a standard L shaped allan wrench. I have no idea what 5 ft/lb feels like. How critical is this? Have I over-tightened? Am I in danger of having my impeller fly free and eat my cyclone?