M&I Window Part

Hi, have an M&I double Hung window mo0del 380DH series and the right hand (as you face window inside) has broken. You can see by the photo. The other has the warranty and serial number: 380DH series double hung window Warranty 2081481.3 380 H-R25-47x73 AAMA/MWWDH101/1.5.2.97.

Looking for one two coil balance part.Do you stock them? M&I gave you as a possible supply source.

Thanks, Jim