rail

Does anyone know if there's any good places to order Bestway replacement parts from other than Bestway? I'm looking for some replacement top rails for my Coleman (really Bestway) 18ft round pool but they're out of stock :( https://bestwayusa.com/above-ground-pool-top-rail-replacement-brown-p06809

Just installed my pool And slightly concerned about a few things. Is it level enough? Water from the floor to the top ranges from 33.5 to 35 inches. Installed on concrete patio that I used paves on one side to level it off but have one horizontal rail that looks like its bending slightly...