Join Date: Aug 2005
Location: Georgetown, ON Canada
Thanked 216 Times in 212 Posts
Sled: 95 ZRT 800 AGLT, 92 Jag 440, 14 XF9000
10-11 Mileage: 800
09-10 Mileage: 679
08-09 Mileage: 1000
07-08 Mileage: 1600
06-07 Mileage: 728
At one time I thought the same as A&J.
Having 2 screws makes tuning much more difficult having so many more adjustment possibilities and combination's. If one setting is predetermined there is only one variable to figure out.
The other part I found confusing is the service manual only gives one adjustment which would lead me to think there's only one screw. I'm pretty sure the ZR600 is an example of the style with both screws.