Here's the back story. I pick up an old flat back long action receiver for a long range build. It's been a looong road as my budget has only allowed for a few pieces here and there. 2 years later, I have finally made time to thread the barrel and mount the muzzle brake , I have finished milling the receiver to allow mag feed of the longer 338 Edge rounds, She got Duracoated a couple of days ago and my plan was to reassemble the trigger components and take her to the range today for function testing. Here's where I am hitting a brick wall. The receiver serial number is F010xxx. I had originally called Savage to try and find the model # to make sure I ordered the correct trigger parts from Numrich but they were useless. Couldn't tell me what model number I had because they didn't have serial# records that far back. So I look at the myriad of schematics and take a best stab at what I need. Needless to say, plan A failed. I had the incorrect trigger pin and no trigger pin retaining clip. So I move on to plan B which is take down a 110 I have in the safe and borrow the trigger group so I can at least see if this thing I've been building for two dang years even goes bang when you pull the trigger. Trigger group goes in flawlessly but when I go to install the bolt, the sear will not retract far enough into the receiver floor for the bolt to go in. It doesn't matter what I try, there is just enough of a nubbin of sear sticking up to block the bolt. I tried both bolt assemblies. No Joy. SO then I grab the sear I ordered. It looks the same, but on closer inspection the tab that engages the trigger is shaped a little different. It pins right in, and the bolt goes into the receiver. Yipee....function test....crap. The sear seems to not want to reset, like the spring isn't strong enough or the sear is stiff or sticky or something. When I use the sear that was with the other rifle, it moves freely and the spring seems to reset it just fine. It's just when I use that one, the bolt won't got in the rifle. The Serial number on my other 110 that I was using parts from is F752xxx. Can someone for the love of God help me figure out what damn trigger parts I need??
Thanks in advance!

Dan