I have never used the WB products until now. I have never used an exhaust system that had the adjuster plates in the silencer. Is it ok to run the WB pipe without the spark arrestor plate in it? If so, do you still need all the other plates installed since it would be wide open without the spark arrestor plate installed? I noticed on the WB site that they sell a different tip that has the turned down end. Could that be used without the spark arrestor plate installed?