thank you all for the comments,

i did notice that with knife edge, that she started to go to left, when going away from me.

so she probably is tail heavy.

i still think she is doing well.  it would probably be good idea to try to see what i can do to further move CG forward.  so far, short of adding weights, i've done everything else.

might just leave as is, and keep flying her to get to know her better.

I do believe that both AA5BY and speedracer know their stuff, you guys, i think, hit nail on the head with the diagnosis.