I have to source a SS hose (or extension) with a "tee" connection to
>do this because of the limited space between the pushrod tubes.

Gary,
Just go to a hydralic hose place (or Hydralic equipment place)... look in
the yellow pages.... they can make a hose for you any length you want. For
my 90 Westy 1/8 inch pipe threads work virtually perfectly the same as
10mm... metric is very hard to find.
Bill
90 Westy Synco