I just got the 15G swap done and I had it up and running. It was doing fine, but I noticed I had a rather large leak at the oil return line, right where it goes into the block, along the pan rail. I had to cut the return pipe and add a short segment of rubber line to get it to fit. At first I noticed it may not have been in perfectly straight. The second attempt found me smearing RTV on the end and getting it further engaged into the block. I left it sit overnight to dry and set up. Now I try it today and it still is leaking?? Is there a sort of rubber ring seal that goes on the pipe? i know some transmission dipsticks have a sort of sleeve type seal that works perfect. It seems a seal is needed to me

Please advise... Thanks!

Cheers, Mike