@mike g. Mike in looking at your incline, I suggest adding a stiffener on either side of the ramp. Over time plywood can sag and then you could have operating issues if the sag gets large enough. I used 1x2s on all my 1/2 inch ply ramps - actually on all 1/2 ply - longest section is 8 feet with several at 6.
I could not figure out why the end of the tank train looked like it was not an EOT marker - its a caboose!