I'm having a great time with my kid, ( and bu myself) with this old 2018 we repaired. But it seems it goes to fast for my track layout at full throttle and rolls off. It's just around my Christmas tree on 027 track. The layout is 3 straight 2 curve and 1 stright creating an oval. Is that normal? I'm using a 1033 transformer.
That is normal.
You need to reduce the throttle to run at a normal speed, or add cars behind the loco to load it down so it runs slower.
You can also use posts A-U on the 1033 to lower the output voltage.
Larry