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With the cold-air intake out of the way, it came time for Lacko to drill and tap the hole for the nozzle. First and foremost, stuff a rag down the inlet tube to the blower, and then place tape (sticky side up) around the area where you plan on drilling the hole, both inside and outside of the inlet tube. The last thing you want to happen is for a small piece of aluminum to make its way into the blower case. With only around 10-thousandths of an inch clearance between the blower rotors, even a small sliver of aluminum will stop the blower from spinning faster than a space shuttle heading towards space on blastoff. Once Lacko had the hole drilled, he cleaned it out, ran it with a tap, and screwed in the nozzle. Notice he wrapped tape around the threads of the nozzle to seal it in the hole. One more thing: Do not forget to carefully remove the tape and the rag. As added insurance, Lacko put a rag over the mouth of the inlet tube and blasted the area with compressed air to get all of the shavings out of there.