Ebay is great for parts. Also check out Losi Parts House at
www.losipartshouse.com. Stormer Hobbies and Ultimate Hobbies have always been good also. Always check Ebay first...there are some great dealers like A main Hobbies and Atomic who have treated me very well.
If you need help give me a shout and I'll see what I can do to help. The X is a great car...don't let anybody tell you different.
BTW, 64 pitch is great for racing as you know but you can run 48 pitch also. For bashing, the 48p might be better.