Pesky flywheel pins

[rbade12 at aol.com]

I need my flywheel resurfaced. I've gotten the 3 shorter locating pins out. The two longer pins, that seem to serve no purpose, wouldn't come out easily. I broke them off flush with the flywheel. Do I need to drill them out and replace them or can I eliminate them? The pin which is on the engine side of the flywheel is important it appears [timing pin?]. That pin will not come out easily. I don't want to mess it up. Does it need to come out to get the flywheel surfaced?

Thanks, Bob