What i'm going to say might have been answered but ...
Those grease can be quite heavy. The stock grease. I think you won't really loose alot of weight though. Don't go drill your Pro Model everywhere. Its used by people for its strength and if you drill it , it gets weak.If you want a light scooter then go get something light but I think you should just get use to Pro Models.
Hmm , coming to think about it with common sense , you should not do anything but just man up and use the Pro without taking off weight. Those little things which you can save weight on , do it if you want but you won't save alot of weight.
Pro models are the most durable for that price as far as I know. Just ride it and don't bother bout the weight.You will get used to it like me. 1 day and liked it.
Good stuff, but what about the spinning of the steering column? Used for barspins/tailwhips. I know they loosen over time but what about for the people that actually want to ride the scooter?