Anyone have experience drilling a hole in the sidewall of a fridge for access for CO2 lines so that the tank can sit outside the fridge and be able to feed gas to kegs through the sidewall? I found schematics of my fridge online, but it doesn't show any info on what's hidden inside the sidewalls. I think the schematics would have shown any wiring, but are there cooling elements there? Or is a fridge basically just a giant cooler and I'll be okay to drill away? Thanks for any info anyone may have.