I am getting into bottling more off of my keg. I was going to purge the keg fully, and then when I am done, hit it with 30PSI to make sure the lid is seated properly again.I normally hit it with 30PSI right when I fill the keg and this works very well to minimize leaks in the lid. Is this going to waste a lot of c02 when I purge each time I bottle and hit it with 30PSI afterwards? Is this necessary? What do others do when they purge the keg? The reason I am doing this is because sometimes when I bring it back from purged to about 5-8PSI I can hear the C02 leaking out of the top.