Pocket Doors

I Have pocket doors installed in my house I just bought. I have adjusted the doors so they go in and out a little bit smoother but still has some slight resistance. I really don't want to replace the rollers because take it a part seems like a headache. Will spraying silicone spray on the rollers help any or should i spray the wheels/rollers with anything to help run smoothly or just leave it alone and replace the rollers soon? Thanks in advance for any input and or advice.