Since I did not see a responce to your post; ABS vents are around .0015-.0025 deep and about 1/8-3/16 wide. Generally you want a 1/4 land at the above depth then a deeper and wider land to the outside. If up until now you been able to get away with ejector pin venting you may need to just grind a slight flat on the side of the existing ejector pins.
Steven |