The 142 sounds about right. The new algorithm didn't take place until midnight which is when the cleanup script runs.
It's basically last 40 days pireps, average per day calculated against # of pilots total, and active pilots out of all those pilots.
So Joeri is correct - 30 pilots with 10% active will do worse than 10 pilots with 9 active, but 30 pilots wiht 50% active will do better... with an average of lets say 2-3 pireps a day. Increase your score by - more pireps in one by by more pilots, but it doesnt change in one day, it takes several days to get better - meaning you have to keep your VA performing well and better in order for your score to go higher.
Number of schedules don't count anymore, but the %age of actively flown schedules do have some bearing on the overall score, though not much. But if you have 100 routes and only 10 are really flown, it will count against you, vs if you have 30 routes and 25 of them are regularly flown. It's a bit complicated, but basically the thing is - expand your VA, keep it active in all areas and you will do well