If you're saying its not passing through the screen well, you might want to try a plastisol thinner. This reduces the viscosity of the ink and allows it to pass through that mesh better.
In addition, if you don't necessarily need a 155 mesh, don't use it. Mesh size is determined by the size of the thinnest line you're printing on your design.
By the way, did you flash white, then add the second coat on top? That's essentially to achieving a bright, impressive white... Unless you coat your screen (print side) sufficiently enough to create a nice gasket for the ink, in which case you could possibly print in one pass..
In addition, if you don't necessarily need a 155 mesh, don't use it. Mesh size is determined by the size of the thinnest line you're printing on your design.
By the way, did you flash white, then add the second coat on top? That's essentially to achieving a bright, impressive white... Unless you coat your screen (print side) sufficiently enough to create a nice gasket for the ink, in which case you could possibly print in one pass..