Without seeing the whole picture (being there) it's difficult to give good advice. It looks like it still needs to seat . Like Bob said, use a soapy solution and keep working it in. If you think you need to take it back out, do it slow and easy, a little at a time. When you put it back in, Get a small nylon rope about 3/16. It will stretch but wont brake. Cross your rope at the top and work out from the center, one side then the other till you work your way back an forth to the center on the bottom.