The last section with power is the 90 degree.

It goes, my power straight (the plug in one) then th e90 and then it stops on th next straight.  If I push the train through to the next track it starts up again.

EZ quick connect things.  I tried to check the voltage with a multi meter and it seemed o be OK but I am not exactly sure what I am lookin for.  I also was checking for continuity but again I am not sure if there is a trick to it.

Since I swapped out different straight tracks and they all failed in the same spot, I was hoping it would be something easy.

Hello
I just made my first figure 8 with a standard kit and some extra track.  When I try to get the train to go, it keeps stopping on the straight track next to the intersection.  I cleaned it and switched it out.  Nothing seems to work.  Any track I put  there akes it stop.  Once the train gets past the bad place, it goes fine.  I am not sure what to do and Christmas is coming.

Thank you for any help