31 Model A SW Town Sedan Project Roof Restoration

[Tom Wesenberg]

I have a set of nice original top bows for my 1929 Tudor that I will install someday to replace the homemade hacked out bows. Without digging them out I was just wondering of the mounting holes are tapered for flathead screws, or are they counterbored with a flat surface for round head screws?

It seems the tapered countersink would put side pressure on the wood and make it more likely to split.