I have my QSC primary and STM secondary gen 2 for sale. The QSC has about 1000 miles on it. About 200 miles ago I sent it back to QSC so Adam could re tune for the stm and he checked everything to make sure it was good working order. The STM has about 200 miles on it. I have a 45 helix extra and a gold spring to go with it. Asking $1050 them.