[Top Down]

Yes, I concur. Tape way too wide. 3mm is the way to go. I used it on an HO club track for twenty odd years with only the need for occasional maintenance, replacing bits where chunks had been taken out by the steel guide pins as cars left the track.

Lay the tape on a good warm day and ease it INTO the curve from the outside of the radius, rather than the other way around - as if you were going straight on with the tape. Also, feed it gently into place rather than pulling it around the curve, which will strretch it.

There's a knack but once you've got it .....