So Jerry if I have an o ringed head but didn't get my ears reinforced should I not use the head stay mount?

I would recommend that the ears be PROPERLY reinforced on all cylinders that have been ported.  If it has a fresh bore, you should reinforce the ears before it needs bored the next time.

I have seen a hand full of  stock cylinders with a lot of miles on them crack the ears.  I have also had many customers who would not spend the money to reinforce the ears or they had someone not properly reinforce the ears, break on the first outing after we put some power into the engine.

It might be a good idea not to use the head stay until your ears are modified.