PLS Help! Looking for LPL (or similar) 6x7 Negative Carrier RDE SYSTEM

Hello, I recently purchased my first enlarger (LPL C5700) and am in need of some help to locate 6x7 & 6x45 negative carriers for my enlarger.

I have talked with KHB Photogrphix and a few other stores which have informed me these carries were taken off the market about 20+ years ago and mentioned that these would only be able to be bought on the second hand market/from alternative companies.

From doing research it seems Rollei's RDE System Negative Carriers are identical and would work. I have attached a photograph of a Rollei exmaple.

Any help is greatly appreciated!
Thanks,
Alex

Can't help, but I have also been looking for other sizes for my 67D. LPL enlargers were sold as Rollei, as well as Saunders, and quite likely a few other brands.