[ghnat]

I had my mechanic install new rears, but I thought I'd try the fronts. I have read up on Clark's and have every thing ready but... I first have to remove the races.
I got a brass punch (could only find a flat tip) and gave a few whacks... nothing. Do I need to really hit hard to get them to budge? I used a 4lb hammer. Also, it is freaking cold out there, will heating the hubs up have any favorable effect?