Thanks for the reply Fonty,

i've done afew laps on track this morning and did plug chops with the mc21 flywheel, by the way im using a lightened mc 21 flywheel (30% lighter) its running really smoth and with a really fast throttle response but this time the engine peaked at 12,000 RPM on the tachometer~

Did some research on ignition tuning on the web and I've sent in a spare MC28 flywheel for lightening (25% lighter) and to test it out later next track session.. as for Dyno runs.. i guess thats not really a matter to me and they can be kinda tedious in Singapore... (Finding a good dyno tuner garage for 2stroke.. kinda practically impossible here).

then again i'd like to thank you again for your reply !