Hi all, I'm new to airless sprayers (though I have experience painting cars with HVLP and murals with an airbrush). I just bought a Graco TW170 for two jobs. One is an exterior job involving painting a gazebo with 4x4 posts, and another in interior painting door/window moulding and floor trim. Exterior job is using BM latex paint and interior job using SW PC. Recommended tip sizes on cans are .15 and .17 respectively. However, I have a graco 211 tip (to get a 4 inch spray). I know using too thick of paint can blow out a tip. Can I thin down the the BM and SW paints to shoot through a .011 tip? If so, by how much? Thoughts or suggestions?