Quoted:
Wore my Plate carrier in a class for the first time yesterday. The side plates malice clips were rubbing and chafing so bad i have black and blue marks and a small blister even. Flipping them will just cause the hurt for elsewhere.
View Quote
What does the side of your PC look like? Are the sides simply webbing straps connecting the front and rear place carriers?
If so, you should look into adding a cummerbund. Look at the PC mfr's site to see if they offer such as a retrofit. some cummerbunds have integral side armor pouches, while some lack this, but have PALS webbing to attach accessory side armor pouches. If a cummerbund with integral pouches, contact the mft/vendor to ensure that the pouches will fit your particular plates.
A link to your PC mfr, showing your exact model of PC would be extremely helpful. Otherwise, a pic, also specifying the exact make, model, and size of your PC will help greatly.
FWIW, a lot of folks don't use side plates on their PCs, and a good many of these folks simply use soft armor. The idea here is to trade weight for mobility and a lesser level of protection. YMMV.