i just learned these, im not really sure how to fix your problem but im kinda having the same problem sometimes, ive sort of found that if you set your spin off a bit harder - almost more than you need for 450 you will land more frontseat
solid pop out of the railhand close to your knees a once your off the rail
spin harder so your upper body is always a head of the lower body, so you know where your going.
getting the unat 360 on a small jump can help too
im having the same problem. i land them about 1/2 the time and the other half i wash out on my ass. i dont have the backseat issue when i do it on a flat rail or box, but on up rails i always land backseat, any tips?
