I am new to TIG wlding and I found by reading one of the forums that I use a belt sander and drill motor, I stick the electrode in the drill and spin it slow in the drill and can get really nice points , real fast,and nice angle, Just use a new belt and it cuts great..
Gary

I will second that , I am new ti TIG and between this and the "blue" forum I can get any information I need usually within minutes and also a lot of good people on this site.. I havent been on that much lately but there doesnt seem to be a lot of bashers on here that I have found , just he...

Why not just make a spacer out of .125 - .180 stainless and block it with a high temp gasket?
Might save blowing through the manifold.The water ports might be contaminated and not a lot of meat to grind away.
Just a thought.
Gary

I might try it just for practice or something but ebay has a million of aluminum props for cheap,and like metafos said it will be out of balance and shake the seals out of the lower unit...Especially anything over 25 hp.
Gary

I asked my local gas suppler and he says it is normal to have between 200+ or 200- pounds in a tank because of like the last poster says , ambiant temp and pressures..
Gary