Do One Drop’s Flow Groove Pads fit yyf throws that take the slim size CBC pads?
No. Been there done that. They work for CLYW’s (all of mine have flow groove) and werrd’s as far as I know. Obviously one drops too.
Check the product page for the yoyo in question for the proper response pads. If in doubt, contact YYE and they’ll ensure you have accurate information.
That’s not to say people here can’t give accurate information. They will when they can.
As studio42 said, it is quicker and easier just to check the product page (when in doubt).