Found this Beverage Air BM23 on CL for $20 (with the rest) and it doesn't cool well (fan on inside is toast and doesn't seem to run well), door is messed up, inefficient, etc etc... anyhow, I'm wondering if any has ever used the top of these to put on top of a 5.5 cu ft or something like that size freezer? I haven't really jumped into remove the top yet but wondering too if there are freon lines in the top and/or how easy is it to remove?