I recently remodeled my bathroom and after I had already installed the ceramic tile onto the backerboard, I realized that the gap between the tile and tub is between 3/8" and 1/2". I was afraid to try putting conventional silicone caulk in such a wide gap because I figured I couldn't get it done neatly enough. So, I put a pre-manufactured tape-like product on and my wife and I don't like the looks of it. I want to re-do the caulking. Does this gap seem too big to seal with silicone caulk dispensed from a caulking gun?