the unbelieveable speed with a Weston Magnum
That old dog of a 46 and a MA, im surprise you got anywhere close to that. you NEED a APC and practice landing so you dont break props, the prop should stop just past flat, so if the grass wants to push it back up a little it can. Stop using it if you see white stress cracks on the front near the hub. I'd check the gun is ok too, drive along the road and point it at signs to check its about same as your cars speedo.
the 46 wont like much more than a 8x8