Man i feel for you, i know to well the anguish a prop nut can cause, i tho had the oppiste proplem, i tightened my prop nut so tight that i could not get it off. I was trying to hand start my new OS .46 La (WASTE OF TIME) and got frustrate so i went to the shop and bought a starter a 12v Battery a nose cone and a few new glow plugs for good measure. When i got home and went to take of my prop i could not get it loose. I was trying so hard that i stripped the nut to a nice circle. Then i had to bright idea to get out the angle grinder and make new flut spots ( not my brightest moment when i look back). That failed to work as i just kept stripping the nut. Well then i decided to just gently grind away at the nut untill it fell off, makes sense right, well that didnt work either, so then i decided id get the hack saw out, cut of the prop, and try and loosen what was left of the prop nut from behind. After hacking of both sides of the prop i was left with the middle bit of the drive sharft with ALOT of cut marks in it but failed to get it off.

i think that had the be the worst day for me when it came to making dumb decisions. i still have the engine wth the middle of a porp on it and a angle grined pop nut. [&:]