I am tuning up my homebrew 6-meter yagi and find that the rod inserted into
the capacitor tube of the gamma match is only inserted by about 1-1/2" to
obtain 1:1 SWR. I guesstimated and cut the spacer and shorting bar for the
match to provide about 1-1/2" parallel space between the gamma match and the
driven element. I did this because the text of the article did not specify
the space. Is this dimension critical? Is it normal for a 13" gamma match
to only need 1-1/2" of rod insertion to obtain the proper capacitance?

Thanks.
Russ KG6TDX