In automotive plastic parts, about 30% molds we build are for such round parts, made by PA6/PA66 with glass fiber, tight tolerance and strict functional test requirements, we have gained a lot of experience in build such molds, always try to place x3, x5 or x6 injection points to keep roundness as much as possible, details moldflow analysis especially for deformation/warpage analysis to keep safe steel and counter deformation on steel in order to have easier fine tune loops.