1)I recently upgraded my 10 spd stock tiagra chain to dura ace chains.
Only to find out that the chain the shop gave me were 11spd dura ace ones.Will this cause an issue on shifting? What are the pros and cons?
2)Another question I had was aesthetically I really like how the new 11 spd Ultegras cranks look like. If I upgrade my cranks to 11spd and retain my current shimano 10 spd groupset - will it work fine? I am just changing cranks. Will I need to change chains?