In that email with your test cubes, you mentioned you had the extrusion multiplier set to .47 but first layer width set to 200%. That’s why your first layer and solid layers are sparse. Please return and keep you extrusion multiplier to 100 in the slicer. Generally you want to keep it within 10% +- but for this purpose, leave it at 100 for the moment. Please set your first layer width to 100% also. If you need more first layer adhesion, increase first layer height, not width.
During the first layer, make sure you use the Z Baby Step option on the LCD to jog the bed to the perfectly squashed height.