I have searched and everything shows that even the arch urethane lip is not available anymore or at least they don't respond?

Any help is appreciated.

 

Chargespeed. About a grand from the USA distributor though. Other places I found are out of stock and wont seem to be restocking. Just got mine a few weeks ago. Communication with them is a bit sketchy though, it seems they never know anything of current order status, and they seem to have multiple company names. Took about 3 nervous weeks to get it.

 

Does a polyurethane one even exist?