I just joined the forum after looking for information on the Witness line of pistols. I have four EAA Witness pistols. Two 10mm, blue pistols (AE92xxx, AE89xxx), one 38 Super, wonder finish, (AE86xxx) and one, wonder finish, 45 ACP (EA33xxx). I have tried switching the slides around on all four pistols and it works. The fit of the slides is loser on each individual pistol, even the two AE slides when frames are switched is looser on frame AE92xxx and AE 89xxx. All three of the AE slides work on the EA frame. Both 10mm frames have 'cat 7442' stamped on the left side, and AE 89xxx is stamped 'Mod. TA10' on the left side. All four pistols have been shot very little and were purchased new, but were the last ones in the store or at the gunshow, but seem loose when compared to a Kimber 1911. I have fired the 38 Super the most, maybe 600 rounds, and it experienced feed problems. New magazines and a 18 pound recoil spring appears to have fixed the problem. I lost faith in the pistol and did not use it after the failure to feeds where the slide was in the rear position and would not strip a cartridge from the magazine. After carefull examination of the 38 Super I discovered that the firing pin was sticking in the fired position when dry fired. I ordered a new firing pin from Brownells after dealing with EAA service over the phone. It was cheaper to buy a new firing pin than ship the pistol to Florida and back home at my own expense. After I installed the new firing pin I discovered that it would stick in the fired position also when fired. I took it to the dealer and was told that one of the kids who worked there (he was fired after the guy who purchased the 9mm returned it), had taken two of the Witness pistols apart, a 9mm and the 38 Super I purchased, in order to compare the differences in the old frame sizes, and to determine if he could swith slide assemblies around. I shelved the pistol for several years along with both 10mms due to fear of using them and having one fire a cartridge before it was locked in the firing position. I cured the problem with a longer firing pin spring in the 38 Super. I purchased the spring from a hardware store just to see if that cured the problem. I weighed each spring by inserting a dowel rod through the center and adding washer and a one pound weight on top of the hand held rod on top of the work bench and used my dial calipers to measure spring compression and the diameter of the coils. I then selected one spring that showed less compression than the shorter factory spring. I then purchased a spring kit from Wolffe and installed it. The problem appeared to have been fixed. I have fired about 200 rounds through the 38 super with its new spring without problems. I want to replace the slide of the 38 Super pistol with a new one from EAA corporation, but I do not care for the rounded slides they are using on the newer manufacturing run. The look too thin over the entire area under the locking lugs and barrel. I expect all of those slides to break or crack under use. Does anyone know if the slides they sell on line are the square or rounded slides? I have fired both 10 mm lately with Blazer aluminum cased ammo and they were a joy to handle and fire. I shot the 45 in a match aginst several of the Witness Stock pistols. I like the super sights but wished they were made with a full 5 inch barrel and slide. I don't care for the 4.5 inch setup, nor do I think the 4.75 barrels are worth the extra oney for 1/4 inch of more slide and barrel, but that is the way I will go with my purchase just to get more velocity and those super sights.