[Spridgets] SU needle question

[Dave G.]

I have a pair of SU's (with soldered poppets on the butterflies) that 
I've been using as a source of parts...
And I've been looking at the spring loaded needles on the carbs on 
the car versus the ones in the parts carbies..

I find that I have two flavors of the round collar that the spring 
loaded needle sits in...

The ones' in the car are just a hollow cylinder and use a flat tipped 
needle securing screw.

But the parts carbs collars also have a V shaped groove on the 
oustside and use a conical tipped needle securing screw... (set 
screw?)

As I have had the rear carb needle drop a bit in the piston -once-  
I'm considering putting the V-grooved collars with conical tipped 
needle locking screws in the cars' carbies plus a dab of thread 
securing compound...

If I have made myself clear... (??) does anyone have any thoughts on 
the matter... one way or the other?? 

I can find no references to this in Haynes, Bentley or the Factory 
manuals...  ;-((

BTW I am now in "lust" with the Taurus Judge with the 6" barrel !!!

--
Dave G.   KK7SS
'65 MK III Sprite in Richland, WA

If I wake up in the morning, and I hurt, it means that I'm still 
alive !!