Why is it so hard to get good advice !!???

In my program I put the advertise and the 0.050" duration the .509 lift and 108 and installed straight up. The program gave advertise and 0.050" intake closing points 58 was at 0.050" which the CR calculator needs plus 15 so 73 and I'm sure it was 70 something at advertise. I don't know how the computer program gets its numbers but I'm sure there in the ballpark. Plus if you advanced or retarted the cam that's gonna change the intake closing number.