I have 2 Excaliburs and a Hegner similar to yours with the front tension release lever. There is definitely a difference between the 2 types of saws. A learning curve for both but more with the Hegner. If I had to make a choice, I'd keep my Ex's. As to your problem with the quick clamp take a look at the rotating tip that contacts the blade. Make sure it's flat. The same as your Dewalts. Also, make sure the Quick clamp is tight in the saddle that it sits in. As per the instructions that came with it. Congrats on a great gift. They are bullet proof and once you get used to it, will last a lifetime. Check out Scrimper's videos on youtube. He's a Brit with a lot of Hegner know-how.