It is a 525 set 15t front, 44t rear, 108 length DID o-ring 525, V8 is the marking on the chain.
If Jim can get you the master I would have him go ahead and do the swap, he'll give you a good price on the labor and he knows what he is doing and could probably diagnose your problem if this is not the cause of your issue. I don't have a chain tool or I would help you out. But yea one way or the other your chain/sprockets appears to need replacement. My SV is using a 520 setup so this is just collecting dust in my shed.