Can you still get Glidden Gripper? The replacement from PPG is NOT yhe same. Have had good (non aircraft) results with something called "KILZ Adhesion". Seems similar to the Gripper of old.Good stuff. I'm in the final stages of Thatcher CX4 build. Will prime with Glidden Gripper and apply (spraying) per Mr. Morrison's (Weiner Dog Aero) directions.