I don't remember seeing a reply when you were asked if it was a ball bearing engine or not.  If it is a ball bearing engine you should be able to fix the dripping by replacing the front bearing.  If it has a bronze bearing then it is normally lubed by pressure from the crank pushing the fuel toward the front of the shaft.  If the engine runs well and the dripping is not too severe I wouldn't much worry about it.  I would however use a fuel with a lot of castor oil.

 

Paul,

I have seen several engines with front bearings that leak a little fuel.  Most of my R/C engines use bearings with rubber seals for the front--this stops the leak.  On some, the seal is removed on one side of the bearing and the bearing is installed with the rubber seal towards the prop.

If the leakage on your engine is only an occasional drop or so, I wouldn't worry about it.  You can install a sealed front bearing when you replace the present bearings.

On the YS 61 Long Stroke engines I have, some came with a sealed front bearing, however when I got replacement bearings from YS, the front bearings were not sealed.
A fix which the YS factory used to stop the leak with unsealed bearings was to drill a small (.020 to .030 in.) hole from the front of the bearing seat back into the air intake passage.  This allowed the venturi suction to draw the excess fuel back into the engine intake.  This became a standard mod for YS 61 engines of the early production runs.

I don't know enough about the Veco 19 to recommend drilling this hole in your engine but some one else may be able to comment.
   

Jim Oliver

PS--I am at my daughter's home in LA at the moment, hence, the Regina Kelly name.