I was just given a 1997 Kenmore Coldspot model # 106. 67297790 and want to drill a hole in the side of it to allow the CO2 tubing to get inside the refridgerator. The tank itself (20#) is too tall to fit inside the refridgerator without making major adjustments to the shelves and in the process losing lots of storage space. So i figured putting the CO2 outside the fridge and running the line inside through a hole in the wall would be my best option. I tried searching for it on the www. but didn't get any definite answers. Anyone know the answer or know of a website that specializes in these kind of questions? Thanks.