I know this thread is old but I'd like to share some info to help future readers.
This is unfortunately a common issue where transmissions are ran for thousands of miles with badly worn or even absent of sockets, and the shift shoe has either become elongated or has developed sharp edges by direct shift handle ball end metal-to-metal contact with the shift shoe. In fact, about 1 out of every 10 transmission cores we get back from customers have this issue. Sometimes we are able to repair the shoes, but usually we completely replace them. This is why it is important to have long lasting sockets and why we use special hardened urethane that far outlasts the stock counterpart! Many people neglect the socket and end up having to tear their entire transmission apart just to replace the shift shoe.
As for the possibility that we sent flashkl the wrong socket, he would have known straight away. Our HD socket fits most top direct shifting Toyota transmissions this side of 1980. We do sell a stock Toyota socket that fits the side-shifting L43 4-speed, but it is smaller in diameter and also uses a smaller shift handle ball end. The L43 socket cannot possibly fit the ball end of a top shift handle, unless the ball end is grossly worn out from misuse! Also, the L43 socket would be incredibly loose in the top shift shoe and the shifter would flop all over the place.
The only thing I can recommend is to somehow remove our HD socket without damaging it, and run your finger around the rim of your shift shoe in the transmission. You will have to remove any sharp burs being careful to minimize how much metal falls into the transmission. If the shoe is elongated and really damaged, the only solution may be to have it replaced... You could try reshaping our socket to fit the damaged shoe, but that isn't the solution to the real problem at hand.
V62WDLongbed, are you referring to our HD shift socket or seat?
If you are referring to our socket, then the same applies as above. You must have had some burs or swelling on the shoe from many miles of use. I'd have to say it's probably smarter to have shaved our socket rather than risking metal contamination in the transmission by repairing the shift shoe.
If you are referring to our seat, then you should not have had to do this. Our seats fit all designated applications without any modifications needed. Your carbureted truck will have a G52 (or G54 depending on the month your truck was manufactured in '84) which is a direct plug-n-play application of our HD seat.
I will admit that at first glance the seat seems to not fit the shift base at all! Some people try to bend or squeeze our HD seat into position but the hardened urethane is not forgiving in this regard. We therefore have this animated image to show the proper lay-and-rotate method of installation:
Also please note that the stock black rubber insulator is discarded and no longer used with out HD seats. It is absent in the animation.
Please let me know if you guys have any additional questions! Wish I had been around here sooner!