Hey Perry,
I don't know what your new material is like on the underside, but it would be best if the material has a flannel underside to protect the paint & brightwork from scratching, while the exterior still be waterproof from at least light weather.
Back in the day Covercraft or one of the cover makers used to sell an exterior grade all cotton or cotton/poly with flannel underside 914 custom/semi full cover, which IIRC was ScotchGarded for weatherproofing, but I don't know if they still offer that one, nor if the fabric is around. I still have the now torn one of mine.
I suppose if you found a cotton or cotton/poly flannel material, that you could Scotchgard the covers as a completed unit post-assembly/sewing on the outside.
This is not meant to sidetrack you, being what sounds like far along on this new fabric, but just as food for thought in the future.
And another suggestion for this run too, you might look at something to protect the hooks at the securing straps from scratching at the wheel wells too. Perhaps lining the inside surface of the hooks with some soft felt or flannel material would help, but that may necessitate using a slightly larger hook.
I know that after seeing someone in SoCal who had an original fabric umbrella cover of yours, the cover & hook scratching was a concern of mine on my 914 (post resto of course).
The Umbrella cover is a great idea, when you don't want to put on an entire cover BTW - Good on Ya'!
Thanx for making these for the group & Cheers!
Tom
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