Ok, please help me. I've received various mixed messages re. v1 or v2 octalink for FSA gossamer. FSA themselves say v2, longer spline version. So now I've bought on of both to try and find which fits... but neither seems to! Please can you guys answer two questions?

1) If you have a crank not on a bike, is it v1 or v2, and how long are the grooves on it?
2) When you fit the crank on the bike, how far along the splines does the crank fit before you need to pull it on with the bolt? Is it just a tiny bit, or a great deal?

Thanks very much. Please help me sort this!