Yeah pulling it tighter can pop it out of the channel. I wouldn't be satisfied if the corner had a kink in it. That's why I bought my windlace from Restoration Specialties after reading here about issues with it and comparing the piece of original windlace with what I bought from Jim Carter. Even though I had already bought windlace, I bought the stuff from Restoration Specialties (the tan color which I liked best of he options.) I offered the Jim Carter stuff to WiCruiser and did warn him about the possibility of kinks at the corners.

I have heard about pulling a rope thru the center of the bulb section that would help it follow the curve at the corners better. Maybe that would be worth a try with what you have.

[On edit] Here's a couple more pics of the windlace samples I have. The center one is from Jim Carter and the two outside are from Restoration Specialties. Notice that the bulb on the Jim Carter is already further from the face of the door, as well as being farther from the track. (I don't know why that one sample looks so reddish - the background is a blue shop towel.)
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Last edited by klhansen; 03/04/2026 10:20 PM.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.