Flap Tube ?

[Duncan MacFadyean <HalcrowMRO@compuserve.com>]

Message text written by INTERNET:JohnJMoran@aol.com
>1/16 drain should be drilled at the low point?  Would this weaken it
significantly or tend to cause cracking?<

I drilled a 1/16" hole at this point. Its not the most highly stressed part
of the tube and I would argue that this hole has an insignificant effect.

Duncan McFadyean