Put in several sets from various vendors and didn't notice any problem with installing any of them. As I mentioned in another thread, a little wipe with some engine oil will help rubber slip in and it's absorbed in short order.
DG
An interesting aside; I am bad about ordering parts twice, forgetting what I have in inventory. In doing so I have noticed the same part from different vendors sometimes can be quite different in quality. I have seen that quality jump at least 25 degrees from one vendor to another. The best example would be window lift channel sets and cat's whiskers.
