thanks chaps.i think im just worrying over nothing its just ive never really trusted tuned production 250s as when i started racing i was watching rgv's pop every 5 mins and it put me off somewhat.Now my wife and new child dictate everything about the tz is getting too dear to run,but i still want to ride 250s so i thought why not have a go at this.hopefully it will be good and ill get out at aintree for the august meeting and have a good day.thanks again.