Its okay I have a Cen SP1 and I was really Pi$$ed off at them when I first entered the hobby the car had a couple of problems like airleaks and messed up carb. and the tank having air leaks in it. After a couple of months I finally got it running. There customer support wasn't really helpful to me either one of the guys was back talking me (no I didn't ask a stupid question) for some reason after I was asking him if I could send my car to him and get them to replace the parts for free(which the manager said he could do for me) but its an okay car I don't have any problems with it anymore. Although I didnt like the guy that was being a @$*.