Swimming pool liner fell out of the channel

uncovered the beast today. noticed over the winter the vinyl liner fell out of the channel (again) on the top that is held in by a strip of some kind of plastic. last year it happened and i called around and asked how to remedy. they told me to drain till you can lift it back into place then reapply the bead. which i did. lasted all summer, with periodical pushing in of the bead. web sites say no adhesive is needed. but..... im thinking differently. some silicone or something maybe? anyone else ever have this problem? the pool is a 16x24 above/in ground hybrid: 1 half is 4' deep, the other is 7' deep with a average of 3.5' sticking out of the ground. thanks for any help
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I used to wedge small strips of plastic in with the bead so it presses tighter. Tape may work too, just never tried it.

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.