Dear Buddy:
I once did one tooling like this. In the flow length direction the shrinkage is 0.003. In the perpendicular direction the shrinkage is 0.10. Usually if you want to use the resin including GF then the shrinkage is difference you have to conside it. If the warpage is big. Pls add a few more gate to balance it. Let it be disorientated then you can got it. Otherwise you can increase tooling temperature and packing time and presssure. If you have any more queries. Pls call me on 0755-27151818-8102.
You must not use one input gate to the gear. Normally 3 gates should be used for injecting gears to prevent distortion and avoid the fiber orientation effect.