Larger Servo Holder for OpenRC F1 Car

Accidentally ordered a servo motor that was bigger than the one that the stock OpenRC F1 holder is designed for. Instead of ordering more servos, I designed a new holder!

Fits my servo perfectly, not sure about all servos of this size though. Use M3x8 countersunk screws coming up from the bottom, directly into the plastic. There wasn't enough room to include captive nuts without putting them above the servo and requiring stupidly long screws that I didn't have.