Go to www.lamav4.com. There you'll find some upgrades for the v4, also I would get the aluminum swash plate and alum. inner shaft. Dont waste your money on the alum. blade grips(they cause problems), but if you do want them, I'll Give you mine(for free), but you pay for shipping. With some fine tuning your v4 will be a very nice heli to fly, but some of them out of the box are not set up right and require tuning. Feel free to ask me any questions about the V4, I have one and have experimented with it alot.

Have a great day,
Dennis