Chain compatibility assistance
 

Have a FSA SLK compact crank and Dura Ace cassette, front & rear derailleurs. When they built it, the LBA put on a Mavic chain (appropriate width). Anyone see any issues with this? Should it have been a Dura Ace chain (any major difference?) Any longevity issues using the different components (I clean it regularly).

TIA

If you are not noticing any shifting issues, then you can only go with it to to see what happens.
I replaced a DA chain on an otherwise Ultegra system with a high end KMC 10sp chain and had really noisy inconsistent shifting over a new cassette which no amount of adjustment could fix. Eventually took it to LBS who put a DA chain on and volia ... no more problems. LBS said that sticking with Shimano DA chains gives most reliable results.