I have a LT1 ScannMaster on mmy 95 Firebird. I dropped the car off for a front end alignment yesterday and now the right BL's are are around 160 or so while the left side is 130. Why is there such a difference now?

What could of happen while they drove the car?
I did not notice this any other time I scrolled threw the list on the Scann master.

The spark advance has also increased. Whats up with that?

The o2 reading after the car heats up is jumpy like normal but it some times falls to a 2 digit number for a split second, is that normal too?