Not reving past 6500 rpm's

[97XP800]

Could this be causing the engine not to be reving past 6500 rpm's, I pulled the pump apart because that was my only hope and I have tried everything there is:
And wondering if the wear ring is still salvage able..
well I am unable to post pics :

http://www.imagestation.com/picture/sraid225/p11e740cb5169eae5e8bfef0a217bd486/e8fe2fe5.jpg

http://www.imagestation.com/picture/sraid225/p94a8ef10f3cec3380d8ab01087586330/e8fe2f04.jpg

http://www.imagestation.com/picture/sraid225/p4c126c50bad08e7e598fa8da12c5c465/e8fe30e7.jpg

http://www.imagestation.com/picture/sraid225/pfc20af0b27257f6b8c5593b89c0e43eb/e8fe308c.jpg