We appreciate all types of feedback so thank you for taking the time to write this review, although it comes as a bit of a surprise. I realize you inherited the pool and while using the photos you've provided will explain the situation in detail. When the pool was originally built, the steps were done incorrectly.
The step that is there now is not designed to have a cantilever coping stone or concrete edge over it. The original builders used the wrong type of stones to get the finished look you have now which is the cause of the problem. The excess liner material if altered or modified in any way would void your warranty and possibly rip the liner. A perfect example of that is the original liner was installed with tech-screws and not stainless steel screws which we had to correct before installing your liner. Before and after pictures our in our gallery under liners. The actual pool step should have been installed so the top of the stair gasket should line up with the top of the coping of wall to avoid any cap.(See pictures) Which leaves a white boarder around the deck and the concrete comes flush to it. (Examples in gallery) There is some evidence the original liner was installed the same way and the previous company used silicone around the top to fill in the opening.
If we were to trim the liner it would have voided your warranty and lead to potential rips which would end up costing you more money to fix in the long run. We are sorry you are disappointed with the final product but we did the best we could with the product provided to keep the warranty in tact. Thank you again for writing your honest thoughts and hope you have a great summer.