Man, I really dig that smiley .... thanks.
It will be quadrature, for sure.
IF your encoder is in fact 2500 PPR, yes. Mine are 2000 PPR making it 8000/.2=40000 here.
Make sure your screw is not 5mm as they are quite close to one another and can throw you off a tad but not as much as you are seeing.
Are you sure that your encoder is not 500 PPR ? Then quad would be 2000 / .2= 10000.