I think that's normal. The gears won't always mesh when you shift it and the engine isn't turning the tranny. If you tried moving the shifter lever in and out before installing the module, you probably noticed that it wouldn't always shift unless you rotated the output or input shaft a bit.

Bellow is a pic of the proper servo position when it's in forward gear. The second pic shows the parts that you should have left over after you install the module.

Hope this helps.