lock on sparking

I am new to this stuff and am enjoying it greatly. Anyway, I put down some standard O gauge track and put an MTH lockon on the track. My Polar Express Steamer scraps the lock on and sparks. Is there anything I can do to fix this or do I need to tear things up and put down a lionel brand lock on … By the way the track is lionel. Thank you

Got it figured out guys…I was able to slide the lionel lock on under and place it…problem solves :slight_smile: