I have noticed that I am blowing oil out of the dipstick tube, and pushing the dipstick out. Is this an issue of high crankcase pressure or oil level too high?

The car sat a few years, and I just started driving it alot lately. now that I think back, I used to run the oil a little "low" and picked up a few tenths with no adverse effects.

360
stock pan/pickup
hi volume oil pump
PCV (new valve)
breather in other valve cover

No signs of excessive blowby out of the breather. Engine has ~7k miles, <100 passes. I am worried that sitting may have messed with how the rings are sealing...but it doesn't smoke at all, even at the track. So should I just stop worrying and drain a 1/2 qt out of it??

Thanks!
Dave