I have a 87 stock quadzilla and i am about to go to glamis for the first time with this bike. I live in Phoenix Arizona and my bike is running the stock 420 main jets. What should i rejet to so my bike wont run lean in Glamis.

 

If it is completely stock you should be fine.

 

Glamis is only about 500' lower than Phoenix. If it's running good now, I wouldn't rejet.