SKate grinding question

i'm at the challenge where you have to go from a 5-0 grind to a FS Tail slide

I just can't get it! I understand how grinding works i'm just really having a hard time with it.

No problems getting on with the 5-0 as thats real easy, but switching to the tail is killing me

ive been ableto get to the BS Tail, which is pretty much the most frustrating thing in the world since it doesnt count

should i be trying to just ollie straight off the 5-0 and then doing the stick motion to get the FS tail

i need some tips!!

yea i understand that, the couple times idid it BS it was mostly luck

i just cant figure out how to control the second grind, i can go from a 5-0 to another grind, i just cant control which grind it is

I still haven't beat it and everytime I would go for the tail it would keep going to a salad. I just did the last video I had left and I unlocked the Thrasher magazine. Anyway, would someone please help us both, this is the last thing I have to do for the Skateboard magazine for now.