SME IV Tonearm and Warped Records

Thanks for all the feedback on this issue.
I had this issue since I first got the TT.  I have already added a spacer between the cartridge and arm, which helped a lot.  After doing that I hadn't had any problems in a long time.  The other night I was playing a brand new record from Deutsch Grammaphone and the first side played fine, but when I flipped it over I discovered it had a dish warp.  Side one was the outside of the dish and side two was the inside.  The outer edge of the record was at least 2mm higher than the center on side 2.  
To be honest, a lot of brand new vinyl has issues with warpage.  Even when the tonearm doesn't bump the record, I am still certain that they are not providing the best sound.  Dead flat vinyl tends to sound the best.
Also, I have a Kiseki Purple Heart cartridge.  I should have mentioned this in my first post.  I had the same issue with the previous cartridge (Lyra Delos) but it got worse when I switched to the Purple Heart.  

You may be right, but how can you se so sure?  I have followed the set up instructions to the letter, repeated several times, and finally felt like everything was dialed in.  I even exchanged several emails with SME directly.  On the topic of warped records, they simply told me that warped records do cause issues with the tapered tonearms and that tweaking it with spacers was the best way to resolve it.