[SB805]

I know that grading companies do not grade the full strips of 10. However, they do grade uncut panels up to 7 in a row. Does anyone know the cutoff ? I have a collection of strip cards that I have had for years that I would like to get graded. Will any grading company grade strips of 8 and 9? PSA graded a w551 strip of 7 but not sure if they will do an 8 or a 9 card uncut panel. Or has anyone found a company that will grade a full strip of 10?
Pertaining to W515 and w551 uncut.

Thanks in advance.