Id say work out with your heavier chucks, it makes your lighter ones feel weightless where you can really work on your technique using a greater speed. Maybe if your uncomfortable with your chucks weight, try to experiment with making some of your own. Once I started making my own chucks(Dont get me wrong there is alot of great companys out there)but it opened a new world of experimenting with weights/chains/cords/creative techniques, which in return opened my mind further with learning and trying to create my own tricks.
P.S. if you could see my living rooms trinkets, pretty much made of super glue now lol, the fan is kinda wobbly now, ceiling has dents etc. alllll because of chucks ^_^ ...All you can do is practice and try to be as careful as possible.
Good luck friend.
