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Eztroller

Well Known Member
Step four says to "machine countersink the #30 and #30 holes in the left and right.....to fit the dimples in the firewall side.

I feel like I have had to go much deeper than recommended per the directions. Possibly because of the thicker material...? When I place the flanges on the firewall, there is still a gap and I can not get it to lay tight against the firewall. Visible space between the flange and firewall.
 
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To me that looks about right. When those rivets are set they pull in a little bit tighter. As Vans says, if you are countersinking so parts lay flat, you are going too deep. A very small gap means your dimple and countersink are locked together.

Anyway, just my thoughts…

BAR
 
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