The "drilling the hole" thing is a hit or miss proposition. I went for many years without drilling the hole without a problem. Then, one time I noticed that the CA wasn't wicking in the way it should, so I pinned the hinge just to be safe. Now I drill the hole as a precaution, and no more problems with wicking. Plus, now I KNOW that the CA is getting all the way back to the hinge. Better safe than sorry!