No I don't think they did but in each gun I fired 100 rounds of federal 100 grain 327 factory loads to make sure the guns were ok before changing any thing on the guns. I read somewhere for what it is worth that the those Federal loads have small rifle primers , but I don't know that for sure.
On Rugers I go 1 weight down on the hammer and a lighter trigger return . I have done several GP100 ,SP101 , and at least 10 Ruger SA guns . The only problems I have seen are light strikes on 9mm in a convertible Black Hawk and these 2 327s with pierced primers. And they pierce with 32 s&w 32 h&r and 327 all with light to moderate loads.
Same primers in my 38/357 sp101 and 2 GP100s with the same primers and have no problems.:roll:
It would not be hard to put the stock hammer spring back in for a test if the light spring could be the problem.