Sure, dont' do anymore neutral drops. If you did break something, you're not going to be able to fix it with a fluid change. Though it wouldn't be a bad idea to change the fluid.
As far as "boring out the maf" it's cool you're that handy with the dremel, but it's a stupid idea to do that. You can seriously screw with your car's AF and possibly do damage to the motor. The maf looks the way it does for a reason
