Yep, like you said pattern is just a little to the right. You have adjusted, you should be good to go. I would not shoot anymore, you are good at 20 and 40.
I just patterned my 1300 12ga 3" this morning with the same TSS #9.
I had three chokes.
Carlson .660 = 208 in 10" at 40yds
Trulock .665 = 245 in 10" at 40yds
HS Undertaker .675 = 174 in 10" at 40yds