Carbon fiber has been very very good to me I run towers on my truggy and jammin buggy made from CF but you have to seal all the edges with thin CA glue. My new RC8 took alittle over an hour to do this since you have to remove them and the CF sucked in quite a bit of glue and one of my brake linkage rods was not threaded so I had to set up my brakes the old fashoin way. I really dont consider this car a race roller since you have to pull those towers and other carbon parts and seal them. You can ignore this step but it may get you in the end.
These items dont bther me since I think it is impossible to have a true race roller. I'm a good nights sleep away from hitting the track and I cant wait.