after looking at the damper chart I think you'll just need to go up on oil to account for fit/finish, blow by, etc. I know I had to bump up the weight on mine from the chart specs when i went to 3x1.4 tapered.
if truly nothing else changed besides the few minutes it took to refill and bleed shocks it can only come down how/what oil you put in there. Doesn't hurt to check over for loose screws - especially in the rear hubs