Where's the play coming from? Are you sure it's the rockers and not the valve guides?
1.9's, especially the modded rockers and not rollers, will put a large amount of pressure on those pushrods and valves due to the additional travel (ratio). 22k may not seem like a lot, but it is.

Asking for a discount is kinda silly if you ask me, you mod at your own risk! Buy new ones of heads are good or go Roller Rockers ; )