Anyone use a Rollmaster timing chain?

Yes, JP bought out Rollmaster, as stated earlier the German IWIS chain is high quality.
I think I’m correct in also highlighting that it’s not possible to run the factory oil slinger with a Rollmaster bottom gear as its prone to interference and damage - not really a big issue as many treat the slinger as an option anyway.

I dont know about /6`s , or small blocks , but I run the oil slinger on my 440/505 with a rollmaster =no problems !