I see 50” decal on the deck and 75742 model on your registration card. Please find the ID tag on the mower and see if those numbers are the same. Second, from the other picture I can see what you are talking about. I’ve got to run a few errands now, but I’ll get back to you with a few suggestions this afternoon. Am I correct in assuming your cutting conditions include sandy soil, uneven ground and areas of overgrown vegetation? Let me know about those numbers.