I want to give a shout out to Estes Customer Service. I recently bought an Estes kit (the last of the type in the store). When I got it home, I noticed it had a badly deformed main body tube. I sent an email to Estes to inquire about how to replace the tube. Instead of giving me the run-around hassle so common these days, Estes replaced the entire kit, no questions asked. The replacement kit showed up in my mail box about a week after I sent the email. Very impressive and very cool.