dkbs

Hello.

I have a mathews drenalin and its about three years old. I had a string replaced on it a couple of months ago. Recently it makes a bit of noise on the initial draw, but not on those following that during a shooting session. It kind of bothers me, since I'm a hunter and the initial draw will be when I'm getting ready to line up on a game animal. The noise may not be serious, but I hear it and it bothers me. It may be string related, may be something else.
How do I tackle this? Is there odorless oil that I can put on the little bearings to see if it then goes away and move on to something else if it doesn't?

Thanks
Dan