Some 5.9 roller cam help from y'all please

The hughes 1110 spring coil bind at .620 lift with a 1.66 installed height according to them. 1.050ish bind height.

http://www.hughesengines.com/Index/...bnVt&level1=VmFsdmUgU3ByaW5ncw==&partid=10280

I'd check what is there and see if the retainer is an issue. Something doesn't sound right with that spring and a reasonable installed height unless it's retainer to guide/seal issues.