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I have now started assembly. Looking at the head, and seeing how the joysticks fit, the ones I picked up (which I thought were the ones I should get) have 9 pins instead of 5 (as depicted on the website). They are 3 sets of 3 pins. Here's the link from Amazon (https://www.amazon.com/gp/product/B01M5L1BMS/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1). Are these usable and if so, how does that change the wiring? To be clear, what I ordered came with 9 pins, but the picture on Amazon shows 4.