I had issues burning pushrods with the Indy spray bar valve covers so I switched to pushrod oiling. I left the spray bars so I oil both ways. I might turn off the spray bar oiling at some point to see if I still need it.

My recommendation is to use pushrod oiling if you can. If you can't then the spray bar might work for you. As Dwayne says, some folks use the spry bar oiling without any issues so evidently it can be sorted out and made to work.