Engineering is the profession that will allow you to use all of the "cool toys". Yes it is expensive to level. Another profession may help you get further in PvE, but it is one of the coolest professions to have. Engineers get access to everything from Rocket Launchers, to Deathrays, to Shrinkrays, to little gadgets that turn other players into chickens (I mean, how cool is that?!). Did someone on your team die? Use Jumper Cables to resurrect them! Are you deep in an instance and need to repair your gear? Drop a repair bot! For the player that just needs to have cool tricks up their sleeve, Engineering power leveling is the way to go.
     Once you have all the components collected everything has to be send back toyour main character. The mailbox only shows the first 50 items you have in themail. It also puts the last item send to you on top. So to avoid complicationssend the components you need first last: i.e the rough stone and copper bars areneeded first, so these are the last to be send back to your main, after thecoarse stones and tin bars, etc.
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