One of the problems today is you buy an ARF and Assemble it, there is no building involved at all. I try to always have my students Build A kit so they know how to repair there ARFs when they get A bit broken, Keeps them from showing up in my shop too, I hate repairs.
The tips they are talking about are probably the wing and stab tips.

If you post your questions over in the Kit Building forum you will probably be much better off then in the Beginners Forum. Ikon N West are outstanding kits, A Cub isn't A real hard build but if you have never done it before your going to need help or run into A lot of problems, like figuring out what they are talking about. Don't let anyone talk you out of that kit either!! Unless it's me!!!