Propane hose for 2021 CSS quick connect?

jeff57

I have a 2021 TaB 320 CSS and I am having difficulties finding the proper RV hose and fitting for the quick connect at the rear of the camper.   I have tried a propane hose with a 1/4 inch connector but it is too small for the camper quick connect fitting.  All the RV propane hoses I can find only have the 1/4 inch  connection for the type 250 (1/4 inch) quick connect.
It appears a 3/8 propane hose connection is needed to fit into my campers quick connect.  Any ideas what propane hose/connections I need for the 2021?  I understand earlier models were different.
Much appreciated 

Sharon_is_SAM

Check out the post by AnOldUr here:  https://tab-rv.vanillacommunity.com/discussion/comment/159400#Comment_159400

This too:  https://tab-rv.vanillacommunity.com/discussion/11344/grills-griddles-and-stoves-compatible-with-the-quick-connect-propane-port-on-2021-t-bs/p1