Changing an Idle Jet for a New Exhaust (Yamaha XTZ660 3YF 1992)

I've added a new exhaust to my Yamaha XTZ660 3YF, and am trying to change the idle jet to compensate for the extra airflow. I've never done it before, so let me know what I'm doing wrong in the comments. This video's chosen beer was called Pale Fire, and is from a brewery called Pressure Drop. https://pressuredropbrewing.co.uk/ The hat I'm wearing today is from MotörReeen.   / motorreeen   Sorry for the sniffing, it was spring, and I had hayfever. I hope it's counter-acted by the quantity of birdsong. Events of note... Simon breaks the motorcycle - 01:56 #kayothekitten - 02:13 Simon breaks the motorcycle - 03:39 The SD card filled up on the camera at a crucial moment - 04:30 #tinybahco - 09:09 Simon breaks the motorcycle - 12:00 Deleted the audio by accident, sorry. 15:54 #tinybahco - 17:04