After a bit of an Alien abduction, I am getting back to putting together the Big Dummy I picked up last year. I thought I would be rideing it last summer and bought a bunch of Xtracycle parts to put on it. I was assured that I would figure out how to get the LT2 U tubes to work on the newer Big Dummy , but the folks I bought the stuff from demurred as exactly how to to make them work together and which company's warranty to violate first. Any ideas?