Tom, Yes I did clean out the N/V assy.

However I have always suspected that when I ordered the custom ventui and ST N/V assy from Stuka, that perhaps he sent the wrong size N/V. I have never seen anyone else's OS25LA.

The one he sent looks like the same one that would fit My OS 40fp, OS40LA and OS46LA.

I don't know what size ST type N/V assy might be avaliabe for the 25LA or if the one I have was also ment for the .25LA. I made it clear to Lenard what I was doing when I ordered the .250 venturi.
Jerry