I would suggest another of our sponsors,
Premium Aquatics. I'm sure if you give Jason n crew there good enuf measurements of what you need, and the brand name to him,i'm pretty sure they will do their best to help you.
Jason went the distance for me ,on a skimmer collection cup i needed to replace my broken Knop cup.found one that would fit perfect(different brand) transhipped it to me straight from the manufactor,and charged me no more than what it cost him

, and then told me to pay him next time i come down,,,no prob,,,,,
Like what was said here b4, chances are you can find a suitable replacement, if you do a lil bit of email/phone work,,,good luck!