Vandalia Guy posted:You need (3) of #610155200 and (4) of #610155250 for each side. You might get 4 of the shorter one as it's hard to tell which length is going to work better. Thanks for wading through my explanation and hope it saves you some time and $$$. (Hand rail is not attached in the picture.)
As I half-suspected, there's your problem... you ordered the handrail stanchions for the scale Polar Express, not the 027 version that you have.
https://www.lionelsupport.com/...ON=productPartFilter
This is why we ask for catalog numbers.
TRW