I agree with Tim , I have had NP's with my weather strip from Classic Parts of America.
Im currently adjusting my doors and have had no issue with the weather strip holding open the doors like you have stated, being new and not seated they will hold mine open a bit but with just a little pressure they close right up.
Are you sure you have the strips installed correctly ?.. Only reason I am asking is I actually twisted onna mine when makin the corner on my first attempt and didnt realise it till i went to mate up the ends ...it was EASY to do !
I would love to see a pic of your door with the strips installed.
as far as a new set, I found after I already purchased and installed mine that My Uncle PO ....had a new set from precision products in onna the boxes of STUFF that came with the truck , I AM COMPARING THEM right now ...they are nice and may be just a bit softer but match the Classic parts profile exactly.
If you would like a good deal on the set, send me a e-mail Ill make ya a good deal , the set i have are licenced by GM.
Can send ya a pic.

I havent removed a fresh set after install, so I dont want to give ya any advise on how to remove em without messin up your paint.


1952 Chevy Shortbed

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If It Aint Broke Fix It Till It Is!