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I use an infrared temp gauge on the exhaust ports after a hard ride temp on each port is around 190 to 200 degrees. Good way to make...

"Did not touch pilot screws at all". So you have no idea how they are set. Set to 1 1/2 to 2 turns out after lightly seating. Seems...

Stainless steel

I put the Delkevic exhaust on my 92 CB750 very good quality. Sounds good and better performance

Seems normal - 15 front sprocket and 38 rear sprocket is stock. I believe this is correct. You can change the front sprocket to a 17...

At 100 kilometers per hour?? Or what is your speed??

Ride it for a bit. Do not over analyze. Do not attempt to fix if it not broken. Seems like it is not broken. Might do a 1/4 turn out...

Vacuum sync the carbs. Air idle should be at 1 1/4 as you stated. Adjust idle to 900-1000 Now throttle response off idle is the key...