Combination valve plunger reset

[hemi8]

In going through a couple of brake bleeds this weekend and having not so perfect results I finally figured out what was happening. I used a pressure bleeder and forgot to clamp the combination valve pressure switch plunger shut, so it popped out. What is the proper procedure to push it back in?
Mike

 

[hemi8]

Technical Brake Information Performance Online
Might save someone from having difficulty bleeding brakes, if the brake pressure valve shifts you will never get all the air out. You can C-clamp the plunger closed during bleeding or if you run a PV4 combination valve with no external plunger there is a special tool designed to hold the plunger in the center during bleeding.
Mike