I'm trying to remove this stem so I can media blast my frame and forks. I believe the bike is a 1941 Wards Hawthorne and it looks like a Rollfast stem. Any tips or tricks? I have had the bike upside down and soaking with Kroil for 5 days. Still won't budge. I haven't beat or pried on it to hard because I dont want to break it. Any advice would help.