I’m starting to upgrade the fleet to have longer gliders which was originally 20 and now I’m upgrading it to 30 to help with turning plus this helps out on larger engines and cars I’ve only done it to ultra and 1076 so far but expect me to upgrade the rest of the big engines too plus I finally got 1076’s rear truck to work on curves back then it derailed A LOT but I got the issue fixed and he runs great now