Painting Problem Questions

I always spray epoxy 4:1:1 With either DT reducer or MR Omni Reducer for the last part. This lets the epoxy primer level out not so orange peely or as a sealer. They dont say so on the can but this has been a normal practice before they took the lead out of the primer, And my paint rep told years ago I can still use this practice he also said they wont put this on the mixing ratio because they are trying to sell other products as sealers. And get at least a 1.3-1.4 tip for your gun. The best all around gun is a Devilbiss Plus.