I have a LH single digit handicapper that is trying to convert to the new 915 head.  He has 910D2 head with Aldila YS-Q and loves this combo.  He can slightly turn the ball over when he needs to.  He got fit into 915 D3 9.5 degree Tour Green shaft.  He is having a hard time as the ball slightly falls left on him down flight.  YS-Q shaft is no longer offered as an option.

Any fitters run across this or have suggestions on how to fix this?  Ball flight does not change with closing face angle.  He prefers D4 setting which is standard.