I was dreading replacing the wheel cylinders on my 6217 Maint. truck after hearing all the horror stories about the three hub screws on each wheel! So I did a little research on screw removal, and found a old mechanic video on screw removal. He said use a large flat punch and good sized hammer and smack the screw on either side of the screw slot. I did just that and surprise, surprise the screws came right out! I did screw up on the passenger side front wheel however, I sprayed it with Kroil Oil first and it is not responding! So strike the screw first then you can oil it if you see the need. The screws on the other three tires offered no resistance to my screw driver. Hope this helps, I hate see people give up and drill out the screws.