273 adjustable rocker arm question

I have 273 adjustable arms on my 68 340. During my winter refreshing, I noticed I only have one oil hole under each rocker. I've seen posts that lead me to believe the stock 273 arms had two oil holes per rocker. I've also seen some threads about drilling a second hole to improve oiling to pushrod tip. Should I have a second hole? This is a 95 percent street car. It's not a race car if that matters. Thanks.

My 273's only had one oil hole per rocker