X-CANv3 tube question before I damage my amp.

I am new at this. I read some forums about tube rolling. I ordered two Russian Military 6NIP tubes to replace the existing 6922 tubes. Removed the faceplate and tried to install the new tubes. I could not get them to go in flush with the base (caps)? Don't know the proper word. You could see the pins. Not much, but you could see they were not in as far as the 622 I was replacing. I removed them and compared them to the tubes that were in there and noticed they were a hair longer. Also the original tubes were rounded on the pin ends and the 6NIP pins were pointed. I know nothing about tubes, which is quite obvious. The tubes I purchased were supposed to fit. Is it alright if they don't seat flush in the socket. Appreciate any help.