Hello, I just had my kit (18x36 in ground vinyl) delivered yesterday. I got a 8' thermoplastic step from quaker plastics. It seems like a very sturdy step. I am wanting to put two step returns on each side of the step, but the step does not have the recessed circles in the step. It has a textured finish to the plastic. I did not know if i could still put the returns in or if i would have to worry about leaks.