Roof Decking Repair and Water Pump, other solutions

32huson

I think it will be fine with the sealer and smoothed out with your finger, Cover the tacks and the strip completly filling the seam gap on either side of the strip, Do not use silicone !!!!!  Paint will not adhere to silicone at all. If you get paint on the adjacent steel body is bad news,  I use urethane actual  poly urethane gutter sealant for everything house and cars as well. Takes paint well comes in black or white inexpensive about  $10 a tube and cleans up smooth with mineral spirits .
 I would live with it. 

32huson

Good comment and advice  Old Fogey.

35 Terraplane

3M 08609 window- weld is similar if not the same as Tiger seal