I have new G38 that I want to make smoke. I'm currently using the tap in the crankcase for pressure and a Dubro pinch valve. I have the feed to the muffler going in both sides from a tee. The trouble is with the smoke on you can't tell it is doing much. But when you squeeze the tank and for more oil in it starts to smoke a little, but not like I want. I have made a set of injectors out of brass tubing that I have not tried yet, on a tip from another pilot. I'm wondering if I should can the current set up and go for a pump?