it took me a while to figure it out but this is what got it for me. i spin left naturally too but it doesnt matter
i popped off my nose and think about a point on the nose of your skis watch it whil you spin swing your tail over and keep watching that point try to think about not letting that point move off the side of the rail opposite the side you are riding in on (if its a box, think about not letting that point even go over the other side keep it on the side you take off on) whatch that point and when you see the rail in your periphs then you are finished the spin so spot your landing both on the rail then on the snow
riding straight on to a rail dont pop off your nose unless its a low rail or you have a big nollie cuz your nose will be down and you can catch a ski. just pop normally nice and hard
this isnt pro advice but it is what i did and ive been hitting my 270s pretty consistently. cant hurt to try it if your having trouble but the point is try to nollie and butter (ish) you get a lot of spin that way and you wont have to worry about catching your tip and nutting yoself
the above works just fine as well