hey all, just wondering if there is a diagram showing oiling points for my Athearn f7a. I just bought it and it ran fine at first, but now it wont begin to move until about 50 on the dial, then it flies and seems to work ok when I throttle down slightly. it just does not seem to move at first though???? I have a Bachman gp40 that pulls great, it was $35. The Athearn is faster, but weighs much less than the Bachman.