I am assuming you are using a 2 in 1 pick. If so I find it useful to compress the lever pack slightly with the bolt turning leg ie pulling the pick towards or pushing it away depending on which side you are entering.
The trick is to put just enough tension on to compress the pack so that alike levers stay up whilst the others are picked into position. Too much and you will jam the pack solid and risk breaking the leg on the pick, not enough and the levers drop down again.
Try to keep the pick horizontal so the central spine isnt contacting the keyway rim, this will allow you to feel the levers and the amount of tension needed.
Works for me!
