I just discovered that one of my kegs was leaking at the gas in post and lost most of a 6kg cylinder. I should have realised when the beer was loosing carb. Live and learn. After spraying a bunch of foamy starsan on the tip of the keg to find the leak I removed the post and noticed the top of the plastic dip tube was deformed preventing the o-ring from making a good seal. Standard stainless dip tubes don't fit in the hole as its a bit narrower. I know you can drill them out to 5/16 or 8mm and replace them with standard corny ones but was wondering what peoples opinions are on this. Is it worth drilling them or is there a local supplier of replacement dip tubes?