I'm looking for a US source for spare washers, bolts, nuts, etc. to have on hand should the need occure when working on my 450 sized helis. I lost a 2mm X 3.6mm X 0.2mm washer while assembling my T-Rex 450 but luckily I found one in my misc. box. If anyone puts out a kit of misc. fastners, washers, etc. that would be ideal.