Here's a video of my caster buggy with diggity designs upper deck suporrt. This is the best is has handled so far.
http://www.youtube.com/watch?v=EHqBj6ySb50
New update. LOL This is the BEST my caster 1.5R pro has handled. I made some small changes.
Just want to share how Diggity Designs upper deck support works great on these cars. Watch me blow throw the bump section of the track.
http://www.youtube.com/watch?v=kNbLtjrKWbk