Jabol, Good that you did those thing. BTW - The B22 costs HALF what the cheapest CZ does, whaddya expect? They are 'common' probs with B22s, even YT-vids on them. Evidently you didn't research the gun. I have an A & B22 and no probs with mags in either, and the 25s work fine in both too. I found that inserting the mag 'Front first' with a slight angle ensured it was mounting properly, but neither of mine are SS, so maybe there's an issue there ? There are threads here and on Savageshooters and Rimfirecentral on lightening the trigger pull on both of these, tho the A22 is a cra- trigger group. Mainly I took the B22 group apart, polished friction points and did the 'red-hot' T-spring mod to get a smooth 1.4# pull. The same 'hot spring' on the A only gets to about 2.5# because the safety spring needs a certain amount of tension to reset the hammer/sear. See 'Fasteddie01' on RFC & SS.
Good luck on your problems with Savage - I tried to get Lakefield and constantly got US-Savage until I found an 'old number' for direct dial, not an 800.
US Customer service used to be great, but now goes thru a call center (I think) that doesn't seem to be actually Savage ?
Best wishes