rigid spline like forever but it is slightly smaller

A quick learner from pa says:
I am rescreening a door and it was thought to be your forever spline replacement. But product does not fit. No way. No how. The forever spline is slightly bigger. Tried every possible way it wont fit. I dont know brand of door and cannot find this spline anywhere. It looks to be same design. Please help
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Paul from SWISCO responded:
They only made the 55-109 in one size. You might want something like our 59-241, which is narrower but flexible. If that won't work either, though, then I will need to know more specific information about your old spline. I would like to start with pictures (taken from the same angle we take for our own spline, so that we can see its shape) and detailed dimensions. Thanks!
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