pI took my bike for a tune up cables and headset adjustment. I picked it up $0 later and was presented with a well what you need to do now is ....think about a new cassett , new chain ring, new chain and BB. He also mentioned that my cables "jagwires" may need replacement. The bike works great, shifts great and I never once had an issue. I felt like I was at the car dealership after a $25 oil change special. Is this what they do now push the repairs?