Motorcycle Repair: exhaust and jetting, air fuel mixture, time and patience

Question
Hi,
  sent you a question earlier and was looking through previously answered and noticed tampering with exhausts requires rejetting?
      My zrx1100 has a scorpion can and original pipework. Due to a bin, I've had to chop the end can down to about a 12 inch in length-looks good too! I've also taken all baffling away so It's virtualy no back pressure...Any suggestions would be appreciated.
             Streetfighters r the best
                     Steve

Answer
Hey Steve!

You must read spark plugs and tune air-fuel mixture accordingly. Tuning carbs is not easy work. Requires time and patience.

Did I send you spark plug reading files? Compare your plugs to the ones in the files.

Respectfully,
Mark Shively