I installed Newport wipers on my ‘46. They were not exactly an easy install, but the instructions were easy to follow. Didn’t have any problems with testing afterwards. Worked well in the only light rain event encountered since. Most, if not all, my street rod buddies have used the product too and at least from my recollection they never complained about having a problem either. I’m certain a couple of them being as they were, meticulous to almost maddening, would have said something since they were in the group of guys I talked to about a product recommendation.