You will need to be more specific, if you can, as to where the water is coming in. Several of us with the small slide on the Axis/Vegas found that there was no caulking on the outside corners of the slider moldings.
During heavy rain I will sometimes get a very small puddle at drivers corner. I have found that when I remember to raise the rubber gasket it does not happen. The gasket has a habit of sinking downward.
Retired and never looked back