Jetting 06 trx450r for altitude

[jason orear]

I have an 06 TRX450R with an HRC kit and a curtisparks full system, other than that it's bone stock. I would like tips on how to jet it for 5000 ft elevation. Any advice would be great. Thanks

[BSTURDIVANT]

CRF 450 needle- 3rd clip, 42 pilot at 2 turns,170 main with no lid!