IMO $600 for being in and out within 2 hours is outrageously expensive, but i dont have a choice. so i guess its worth it.
i didnt know it was a set rate for a tune. If i knew that i would have made them do everything. also would have taken the WG spring out and put in the 7 psi one. i made sure everything was perfect beforehand to compact time, but it didn't make a difference.