On my first ST.46 dis-assembly, Tom Lay coached me through it by phone. He instructed to hit it with my favorite penetrating oil and let it soak. Take out the rubbing pad any way you can. While waiting, take a length of .047" or 1/16" music wire and cut it on the end with a good side cutter or lineman's pliers. Do it at an angle and it will leave a sharp point. Bend about 1/4" from the end with a slight bend in it. 10 to 15 degrees or so. this goes into the wrist pit hole through the hole in the case. Work the point into the wrist pin side and pull or twist it. Watch for the pin to move, then work it back and forth. You can do the same with the allen wrench as mentioned in the video comments. Push it back and forth, heat some more, and add more oil. Eventually it will come loose. Some of the Tigre wrist pins are pretty tight from the factory. This was mentioned in a recent thread by some one and they can take a little polish when re-assembled. The whole procedure has been mentioned before and I think Randy Smith added some insight also. If you get bored waiting for Santa to come, maybe search the engine forums again. It's another one of those patience and time things. For penetrating oil, this would be a good one to try the ATF and acetone recipe that has circulated around. ATF has great detergent qualities and when thinned and soaking should cut the castor quickly. I just have never had cause to try it in this fashion. Let us know how it works for you.
Type at you later,
HAPPY HOLIDAYS<
Dan McEntee