What's the deal with GT rubber trees? The wild ones I found had a resin hole I could manually harvest from, but they don't seem to drop saplings naturally so I made a shears to cut the leaves and get saplings and have grown 3 more near my base, and none of them have resin holes.
You need to pray to RNGesus more often I guess. Newly planted ones will randomly have Resin Holes just like Wild ones will randomly have Resin Holes.
They have a Sapling Chance that is so low that it averages on 1 sapling drop per Tree, ofcourse averaging means 0 and 2 can happen just like 5 could happen.
Also you are NOT allowed to shear leaves off the Trees, because then the Resin Holes will stop working entirely, even if you plaster the Leaves back onto the Tree.