I am making some guesses but I had read that Performance center guns are equipped with a Wolf Style spring. This spring has an indent that runs its length. So I didn't have a boat anchor I would take a look. If it is a wolf style spring replace it with a factory flat spring and see if that cures it. Replacing the hammer spring is a very easy operation. I can dig your being upset but this time take a look yourself. No one is going to care about your stuff as much as you which is why whenever I can I do my own work.I will make this short. Bought 986 5" barrel in July. Thought it was made by the Performance Center like it says on their website. Nope. Designed by the Performance Center. However, the 2 1/2 " and Micilek 7 1/2" are made in the Performace Center. Shot 150 rounds with no problem. Went to the range two weeks later and had several misfires (light strikes) in the first 2 seven round moon clips. Over the next week I changed ammo six times using every major brand and all had misfires. Called Smith and sent them the gun. Received it back three weeks later. They said they tightened the strain screw and adjusted the yoke. Went to the range and it misfired the third time I pulled the trigger. Missed again the fifth time. Went to local gunsmith of more than 40 years. He removed the grips and saw that one of the tabs at the top of the mainspring was broken off. No loose part anywhere. Must have broken before or while at the factory. You would think they would noticed that, huh? He shook his head and replaced the spring and off I went to the range. Misfired the second time I pulled the trigger. The factory told me to send it back. If they couldn't fix it the first time, why would I? Asked about replacing the gun and they balked at that. So, now I have a $1100 boat anchor. And, yes--the strain screw was tightened all the way against the mainspring when it was at the factory. So, do I have the gunsmith try to alter the gun or send it to the factory because that worked out so well the first time???? I guess this wasn't so short.
I have read a bunch of people having trouble with those .. and of course there are probably many that run them with no problem. Were I you .. put a WTB here or your local gun boards ... a lot of guys swap out their stock springs for Wilson, Wolf or other and if they are like me the stock parts go into the ever increasing box O parts.I've got the broken spring in hand. There is a center channel running the length of the broken spring.
In my previous post I said:Maybe I should try Gunhacker's idea about replacing the firing pin. By the way, how old do you have to be to become a senior member? I believe I passed the senior mark long ago.