Anyone else had noisy hydraulic lifters?
 

I just installed a set of comp cams new hydraulic roller short travel lifters. Has anyone else used these new type of lifters? I had to replace my comp cam due to flat spots on the lobes in only 100 hrs of run time on new 540ci motors. Tech dept. at comp cams said that these are the latest & greatest lifters for my app. Turned out that these are more like the latest & greatest headache I have ever seen! We had to adjust them 3 times & they still don't hold tight, one or two rockers gets loose after each adjustment. ( as in valve lash).:readinghelp: Any input on how to best resolve this problem is appreciated.
Thanks