jd45, never having handled you USFA, I would have no idea if it could benifet from a Wolf spring kit. The USFA's I have handled at stores were very smoth out of the box. Also, I have no idea what you like in the rate of heavy or light springs. I like very light trigger and hammer springs, most of my CAS guns run from 1 to 2 lb triggers, some like them heaver, it's just a matter of personal prefrence. My Uberti's have hammer springs just heavy enough to reliably pop the primers. The USFA pistols I handled had a little heaver springs than what I usualy use. Again, personal preference.
I find I shoot much better with the lightest triggers I can get, this has been a preference of mine for over 30 years now, I like triggers about 18 to 20 oz if I can get them there reliably. I find that I tend to pull the shot off target less with lighter triggers.
Again, I can't say what benefit YOU would get from a Wolf spring kit, only what benefet I get. When I have the guns apart instaling the spring kits, I also use a couple of Hard stones to break the sharp edges and remove any machine burs left over from the manufacture. Uberti's normaly benifet from this. I have never had a USFA apart to look at the inside, however, the ones I have handled did feel smoth out of the box.
I find I realy don't know just how to answer your question. I am not sure if it was a serious question, of if you feel that I was slamming your choise of guns. If a serious question, I can only say that the lighter springs let me shoot better, and if you thought I was slamming your gun, or USFA's in general, I truly am sorry if I offended you. I only observed that to me, they wern't enough better to justify the more than twice as much cost. Others feel they are enough better to pay their price. Opinions vari. The opertunity to pick from diferent makes of pistols is one of the things that makes this a great country.
Greeenriver(Realy not intending to offend)