why are my CVD's to short ??

[mmdooley]

Ok, This one's got me stuck. why are my cvd's to short? I followed all the rules I think? The pillow are screwed all the way in. I have the right drive cups. Bearings look good. I thought I had RDL's but serum measured his cvd and they are 160mm and mine are the same. do all cvd's have slack in them? I can move the cvd in and out about 1/4 inch. refer to pic's. Thanks for the help. :D