Got em all out without breaking any - I don't think Ive stripped the holes either but haven't cleaned it up yet. For this really tough bolt I decided to use a "paint stripper" heat gun on high for about 15 minutes and it still wouldn't budge so drilled a 2nd hole down closer to the threads, earlier had drilled a hole about in the middle of the column to get the penetrating oil down into the crud in the bottom inch of the column also. After drilling this second hole and then using a lot of penetrating oil, then heat, I had progress
had to heat up down by the head for at least 10 minutes with paint stripper heat gun, that's why my aluminum shield has turned golden brown .. I tried a M.A.P. torch but it was to scary and causing way to much smoke for my comfort.. and wiggled back and forth tell I could get about 1/4 turn, came back next day tried it cold no t so much movement so heated it up again and kept working it back and forth - but not going as far in as out.. then add more sauce.. do it again and eventually..
Here's the bolt right after I got it out - I used a lot of B'laster penetration oil, and couldn't get it moving with the 3/8" impact gun - had to really push and pull on this ratchet - really hoping the bolt wouldn't break,, kind of amazed it didn't