Valve Spring Estimated Delivery

Anyone running into issues with valve spring delivery dates?

I ordered a set of Manley springs/retainers/locators 5 weeks ago and the retainers/locators delivered in 3 days. I am now approaching week 6 for the valve spring back order and still have another 4 weeks to go.

I have 4 other valve springs selected that I could use for the above retainer/locator setup (2 Comps, and 2 Iskys), and all 4 are showing not in stock and early May to mid May for delivery. The same estimated delivery as the set that I have on back order.

I am assuming that all three brands are using the same spring manufacturer.