In contrast to the originals, I haggled over the cost, but looking back, I realize that it would not have been prudent to do so. Various disadvantages: CHINESE METAL THAT IS SO FLEXIBLE THAT EVEN WHEN WEIGHED IT CAN BE DETERMINED TO BE VERY LIGHT! They had been in operation for two seasons when they started to get crooked, but it was hard to tell by looking at them; it was only in the shingmontazhka that it was discovered when inspecting the geometry. You should evaluate on your own if it is beneficial to keep the originals. The driving style is standard, I didn't go into the gravel traps, and I avoided hitting any of the barriers throughout the track.