Whirlpool double oven (model sgbd307pdb09) start button is extremely difficult to depress. I often can't activate the oven as a result. The display works fine, isn't dim, and I don't have any error codes. If I am successful in activating the start button, the oven works normally. All other buttons work. I replaced a large panel inside the oven about 6 months ago when the display went out on me (I believe it was the control board). It fixed the display problem but now I've got the issue with the start button. Any thoughts?

Thanks!