I just finished putting a TRD helical LSD in my s54 transmission and i seem to have run into a snag. When reinstalling the gear select shaft the BGB is quite vague, and it seems that the selector is not moving freely enough to get it into all gears. I'm wondering if this assembly has the ability to be inserted with an incorrect rotation, also if i need to remove the #2 lockball to get it into place as i didnt remove it get the shaft out. I've been doing my work with the bellhousing facing down, would this affect the ability of the gear selector to do its job due to gravity on the internals?