That's correct, the stock reed plate is a bottleneck that doesn't utilize all the available area it can while the reeds are open. Not only that but I found that the intake gasket holes are off too, causing about a 1/32" to be blocked as well. It may not seem like much but to these little engines it's quite a bit. Imagine scaling it to a car engine, it'd be like putting a restrictor plate under your carburetor/throttle body. I wish I had a CNC mill/router, I'd have this puppy done in no time.I believe he is removing the stock one and making his own which I believe has bigger holes for the reeds.