Classic Parts Of America has been my main supplier for my '56 for the past few years, and I am very happy with not only their products, but their service. If an item is not in stock, and won't be expected within the time limit I want, I contact other suppliers, and I have bought thru a few. In most instances, CPA has ben able to supply what I want. I have had to return some items, and then again, no hassle whatsoever. Their billing has been correct 100%, and, items arrive at my home packaged to insure no damage enroute.
Last summer while passing thru Kansas City, MO, I stopped in to CPA and met the lady I had ordered from for years--very nice visit. While there we saw a '52 Chev 3100 in the showroom painted Cortez Silver Metallic--wife and I like the color so much, we just had our '56 repainted the same!
Lastly, I think a person can have problems with any supplier, but I believe CPA goes above and beyond to take care of the customer.