Need Help engine dosent run as good as it used to

[Emmasdaddy2020]

Hello everyone! Here is my bike so I have recently moved from Colorado to Missouri. My bike was tuned for the high altitude and it ran great up there but now after moving the bike dosent run as good I cant seem to figure out why, I swapped a few jets i had a #60 in there before tried a #70 and #75 with no luck I'm not sure what to do next I have ordered some more jets well see how long that takes to come in but if anyone has any tips or if you can help out please let me know I'd love the info!

Check your head bolts could be air getting under that head into that cylinder