I've had my gearbox out and disassembled 2 times now. I had change gears with bent teeth from mis-timing engaging the half-nut. I found the brass tubing feeding that bushing on the feed screw was plugged with gunk and paint and good thing I took it apart. The front middle bushing tubing was about half plugged. No amount of oiling from the top whether distribution plate or gauze drip was going to fix it. I blew it out from the inside with shaft out. The ball bearing hadn't been getting a lot of oil either and I packed it with some Mobil 1 synthetic grease. 2nd time I had it apart was to replace the gears I received from Taiwan, the bushings looked to be receiving oil from the drip at that time. If you study the photo in the manual, the gauze covers the holes except for the holes that feeds those brass tubing ports and the port over the ball bearing. The photo below doesn't seem to show the oil hole for the front middle brass tubing. I should have been more clear on "drip thru those holes slowly", I have a one-shot oiler installed now also, problem is it's fed from left hand side of that manifold. You give it 1 shot and there is just enough oil that it comes out of about first 3 or 4 ports, if you give it a quick second shot, oil makes it all the way to right end and you get a trickle out over hole to brass tubing for feed screw bushing, I like having the gauze to at least get the largest amount of oil to saturate it and it has a chance of dripping thru all the holes. All the other holes are just dripping oil on the gear teeth which are less critical than getting lubrication to the shaft bushings. If you direct inject into those holes, most of the oil will be in drip pan pretty quickly and there needs to be some restriction on the ports on the left or oil might never make it to ports on right side. You can always give it 4 or 5 shots I recon but we'd need to change the name to 4 or 5 shot oiler.
