I recently replaced a set of RD pulleys with some Suntour labeled ones after I dropped the RD and broke the originals. On the bike the bottom pulley seems to rub the chain and makes a lot of noise. The pulleys look like they line up properly. They do seem to be smaller than the space allowed within the derailleur. Could a larger pulley be needed?
I've done a couple searches but haven't been successful identifying a larger size pulley vendor. Unfortunately I don't have the broken one to measure. Any suggestions on vendors or how to proceed are welcome.