Install IG Liner Question for Vinyl Steps

When installing a new 20 x 40 IG liner with Vinyl Steps, Question - when during the installation process should I be attaching the Vinyl Steps Gasket & Screws ?and when should I be cutting out the opening for the stairs ?

Thanks
JJNMRSDAD

bumping this back up

There are 2 ways that I've done it and both work.

#1 is to support the liner bead while the pool fills and then do it - down side of this is that the liner 'over stretches' and weakens.

#2 is to seal the back of the liner at the stairs and wait until the wrinkles are all gone and install the faceplates 'dry'. This is riskier because you cut the liner before any water is in it and, once cut, the stair section can't be moved. If you need more info, just ask:)