Fuel injected two strokes

My son rides in A grade here in aus and races at the state and national level and loves the Lectron carb, no problems at all. The fuel economy is noticeably better. he can do a 40 minute moto with a standard tank on the bike where we had to run an enduro tank with the stock carb to go the distance, especially in sand. Also the fit is spot on. The air stiker made the boot touch the spring(no issue though) and the stock carb had plenty of clearance, but the Lectron just misses it. We are useing the 38 Lectron.