Wanted to ask you all a quick questions about waxing ferrules. I've read parafin was can be used. How much should be applied? Where can I get some. Is there something better that I could use. I've never practiced this type of application before, but after having to send a rod off to get fixed because I (and 6 other people) could not get it to come apart at one of the sections, I feel I need to do something so this won't happen again.

Thanks in advance.