I lost the nylon screw that sits in front of the canopy that bolts down the canopy and servo cover. It's very slim. So before I haul my plane into the hardware store to match it up, I was hoping that someone might know the threading on it? I see some models have a 4-40 holding the tail on? but that may be too big. Mine is just the canopy cover/hatch hold down nylon bolt. Just behind the fuel tank. Thank you.