Your cartridge is out of alignment and is only tangent to the grooves at the beginning of the record. First, you need to make sure you have the correct stylus overhang. Then use an alignment protractor to adjust the cartridge in the horizontal plane (by loosening the headshell screws) to make sure you have tangency at two points across the playing area.
The old standard for protractors is the DB Alignment gauge available from Music Direct and elsewhere. There are others that probably work as well, but that's the one I use.
The old standard for protractors is the DB Alignment gauge available from Music Direct and elsewhere. There are others that probably work as well, but that's the one I use.