Hi Todd, I've purchased a couple of things from Steve. He's top notch and a pleasure to do business with. The pic below is that of my 2260 with one of his stocks. This one is pretty tame for him; others I've seen are even better.
The nice thing about Steve's grip on the 1377 is that it is one piece. It doesn't rock or move around like some of the two piece units do. The forearm is big and easy to pump.
The technique I've used to remove the pins from the pump arm is to strip down the gun to just the valve tube and the pump arm. I put the tube in a vise with rubber clamps. These clamps have a metal back and fit in the mouth of the vise, but have a rubber facing on them so you don't scuff up the valve tube. Take a small punch and tap out the pins holding the plastic forearm. That's the easy part. To get the pivot pin out, leave the tube in the vise with just the front of the valve tube sticking past the end of the vise. You want most of the tube in the vise so you don't run the risk of bending the tube while you're whacking at the pin. I first take a plastic mallet and tap one side of the pin down so it's flush with the tube, before I try to use a punch. Don't try to tap the pin out while it's sticking up because that's when you'll slip and scratch the finish. Once the pin is flush, just put your fingers firmly around the punch near the pin and tap gently to get the pin below the tube surface. From there the punch will stay in the hole and the pin can be tapped the rest of the way out. To assemble, just reverse the order. Done deal.
In your case it sounds like the RB grip wasn't lined up with the pump arm holes on both sides. I've had that happen, sometimes it just takes a little wiggling around with the wood to line it all up. One safe way to insure you don't punch out the wood from the inside is to place the wood forearm over the metal arm, and push a small diameter drill bit all the way through both; then just tap it out with the pin you are inserting. That way everything stays lined up until you're done.
The BSA "Edge" scope has about 12" of eye relief. It's 2X power which is fixed. Most of the air rifle vendors carry it; they run about $50. I've got about 3 of them on various pistols and they work well enough, but I also like to shoot these 1377s with open sights.
