[Yaesu] FT 980 Main tuning dial problem

[David L. Thompson]

I have two FT 980's and one has a loose main tuning dial.    I have had the
transceiver 3 or 4 years and recently I noticed some play in the tuning
dial.  I had it apart recently and checked the inside shaft and its Ok (this
is what usually goes bad).  It seems its one of the two set screws which you
get to by removing the rubber ring around the knob.

I have some troubles seeing since a stroke several years ago but it appears
to have set screws (2) which require a allen or hex wrench to tighten.  The
problem is its quite small
and all my allens are in fractions of an inch not metric.  Does anyone know
what size metric is required?  I got one side tight using my existing allen
set but cannot find one to fit the other side.  I am told the one I can
adjust is a replacement and the other is the stock set screw from the
factory.

The transceiver works Ok its just annoying to tune.

Thanks for the help.

73 Dave K4JRB