So many of these aftermarket dampers fail after such little use it's ridiculous.
I've run stock old dampers on a few engines I raced and never had a problem.
The only one I had fail was a BHJ damper...it replaced a stock damper b/c I was worried about it, lol. BHJ repaired it, but refused to discuss the issue.
The car crosses the 1/4 mile stripe at under 5200 and is rev limited to 6400. Last Fall as a stopgap solution and so I could move the car in and out of the garage over Winter, I installed an OE balancer. It is most likely going to stay for a while.