i'm in the middle of vinyl liner replacement. the plastic extrussion bottom lip cracked off on some spots. what is the best way to further secure the liner in place, in those spots. would silicon caulking help prevent liner movement? also mechanic told me there is a slow water leak at the skimmer piping,based on pressure test. however, the water level (old liner) dropped at the top of the light fixture, but he said the light niche is not leaking. could this be possible?
thanks in advance,