I've had Hinson heads now for over a year and have raced it at track. Not one issue here. Guides still look good.

As far as issues I'm trying to measure for proper pushrod length with the comp cam tool. Hard to get an accurate reading with stock rockers.
As of now I need 7.07 length. I had 7.05. Just put Stattama stg 5 cam and LS7 lifters in.