Thats not drastic .. I've had alsorts of tuning methods ... like 10 base gaskits fitted, ½ the piston cut away, exhaust/transfer ports attacked with a cutting stone etc , reed valve stops bent so much the reed breaks & ends up distroying the bore & piston
half of these i have never heard of to do to your bike whats a 10 gaskit or the exhaust/transfer ports attecked with a cutting stone