Not that you need all this info but have a read through this older thread about this airplane. You'll have to read between the lines a bit as some of the info isn't usefull. Everyone has their own opinion but I would get rid of the supplied links and replace them with something stiffer link 4-40 rod or carbon and use good 100oz servos all around. If you do this and keep your speed down you should not have any of the problems with flutter shown in the thread.
I used the supplied pull-pull gear all last year without any problems.
The DP extra is a great flying plane....I love mine.
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