Cam lash

I'm running a howards solid cam in my race car. Cam card calls for .018 hot lash. I did a little tuning with valve lash. Car runs best at .024 lash. Does anyone see this causing a problem with the valve train. Buddy says the extra lash can kill the valve rockers and valves. any experience? Cam is 272 at .050 and .660 lift.