My Dualshock 4 is acting up, with the left joystick not picking up properly. Forward movement is all stuttery and jumpy. So, I figure I'll try to replace the module. Not the rubber nob, but the actual detection unit. I found them on ebay, and it looks like I'll be doing some soldering, which I'm fairly familiar with. Anyone had to do this or had experience with a similar procedure? Any tips would be great.