Don't panic!

The new 3 in 1 will need to be adjusted at a minimum.

Nose or tail?

If nose right, tail is spinning at or near full speed (too fast)...
If tail right, tail is not spinning fast enough (too slow).

Verify radio trim is centered.

You'll need to begin adjusting the 3 pots on the 3 in 1.

I'm sorry I can't help with the best way to do that as I never had to adjust one from "scratch".

Hopefully someone else will chime in but you could begin by centering all of them and make small adjustments in a trial and error process noting the changes between adjustments and I'll bet you can improve until you get it.