how do I shorten a steering column housing

sorry for the crappy pic but its all i got. i ordered the derlin plastic bushing from RMS. you dont even have to take the column apart. I just took the column out of the car and took off the steering coupler. I then took it down to the local exhaust shop and gave the guy $5 to cut the housing where i marked it with a tubing cutter. drop off the old **** and slide in the new bushing. done deal