Maybe the record wasn't mirror flat before it was shipped (probably). Well, you could either send it back for another try, or get a vacuum table, or a VPI with a peripheral weight and a spindle weight. I live in Arizona and store my records in the un-airconditioned garage where it frequently gets to 115 degrees (but its a dry heat). Anyway...I have lived here now for about 4 months and have no warpage problems.
LP shipping
I'm not going to name any names, yet, but I just gotta get this off my chest.....
I ordered the HIFI News test LP along with the DB protractor from a well known source. These people just placed the LP in a box with some foam peanuts and their shipping label trash along with the protractor. No media mail packaging, nothing. Shipped it via USPS to Texas. It's over 100 frickin' degrees here. USPS put the box in a mail box in our apt complex, and it sat in there until I got home from work. Needless to say, the LP ain't mirror flat as it should be..... WTF?????
I ordered the HIFI News test LP along with the DB protractor from a well known source. These people just placed the LP in a box with some foam peanuts and their shipping label trash along with the protractor. No media mail packaging, nothing. Shipped it via USPS to Texas. It's over 100 frickin' degrees here. USPS put the box in a mail box in our apt complex, and it sat in there until I got home from work. Needless to say, the LP ain't mirror flat as it should be..... WTF?????