When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Don't know if this helps but what I do is switch from alternating, to simultaneous
and try to get the same AFR..
Hold it at a steady rpm like 1.5-2k.
Start at 1.00 and +/- to get where you need to go. Pretty simple stuff.
Mine is more like 13.5 with the fan on but close enough?