You will not be able to answer that question 100% UNLESS you try both ways, for sure as mentioned get on scales and note all the changes to numbers, If the change helped enough to put you up front leave it alone, If not make other changes or re-set cross and prove positive results or negative results, the bad part about making changes different race nights is the difference in tires, as the biggest reason the change at the track helped in the first place is it fell in line with the tires you were racing at that time and that current track condition, you try things on a different night when the tires are not matching the condition you will never get best results.