I built mine without sealing the carbon and (like the plank that I am
) without filing the battery slots. I tried taking the battery posts out last night so I could file the battery slots but I'd threadlocked them so I left them alone! I stripped 2 screw heads though which is a pain, I'll have to invest in a titanium screw kit or something similar, or use less threadlock next time
I asked the Hobby Co rep about the 501 front 1-way, he's going to find out how much they'll be over here and when they'll be available. Footey, apparently the 10 that came into the country via Hobby Co were the entire shipment - ever - so if you can't find a shop with one in stock then you'll have to get one off the interweb (grr). PM me for a shop who might have one in stock if you're trying to get hold of one, and no it's not mine...
A shop near me ordered 2 of them!!
I found that the body didn't fit at the back, but when I stuck the velcro strips on I found that it pushes the edge of the body out slightly which flexes the back of the body down enough to fit onto the rear body mount, so fear not fellow 501 builders, it does fit even though it doesn't look like it will
I've got to paint mine tomorrow and then I'm racing it in the evening...
-Steve