at my home base, and the darned thing came out in my hand

(the white knob with about a 4 inch section).
I dug through the parts book, and it says the following:
Figure 42-13
Page 75
For serial 25373 - 26038
P/N = 0411090-12
Figure 42A-13
Page 75A
For serial 26039 - 26995
P/N = 0411090-8
My serial # is between 26039 and 26995, however, the panel in
my airplane looks like figure 42, not figure 42A. Is the parts book
in error here?
Premier has a 0411090-22 (supercedes the dash eight) for $61.28.
Is the only difference in the dash numbers the overall length?
I also had a look at McFarlands web site, and near as I can tell,
S1230-17 is the control I want (says it's PMA'd for all single
engine Cessnas).
Has anybody ordered either of these before for a B model?