I've got a Fisher & Paykel E450 fermentation fridge and it does a great job as it takes two fermenters as well as other useful stuff. As I accumulate more useful gizmos I'm upsetting the door seal with too many tubes & cables which of course reduces the efficiency of the fridge. I'd like to install some kind of bulkhead fitting and assume the top (roof) is the safest place. Still, I don't have the courage to act on an assumption as I can't afford another fridge if I screw up. No doubt others have the same great fridge. Can anyone advise where there's a safe place to drill through?