When I downshift into third, she'll just sit there and grind and not want to shift into third. I have to basically jam it into gear. I have a B&M SS with a Symborski Shift kit, and I installed it about 3 mos ago, and have not had any problems till now. When I first bought the car, third was always a little rough getting into gear even with the stock shifter, but it hasn't been this bad till now. Any ideas?