My TG1860G has a shock/piston to help raise the deck. Before I buy a replacement piston, I'm wondering how much effort it should take to lift the deck. On the way up, once the slack is taken out of the lever, I have to use what I consider a lot of strength to lift it to the locked up position. Almost feels like I'm lifting all of the deck weight. Is that normal, or should the piston be able to push it up most of the way for me? Same thing with the blade and snowblower when attached.