I've also taped the insides of the tires to "help" with the ballooning issue.
I do the same thing but thought I would try out the duct tape called gorilla tape. Its black and honestly it stopped the balooning all together. I no longer have that issue at all. I also have a RC8Te and a SC8e. I just finished assembling the SC8 but am dying to run it. I love my 8T!!!