Have been working for 2 weeks trying to get brakes adjusted on 2020 John Deere E110 with less than 200 hours on it. I lost the roll pin out of the back linkage and put a cotter key in instead, So adjusted nut in and nothing, then loosed adjustment nut, nothing. Discovered I had the spring on wrong so looked at another junk mower D110 and figured that out, still no brakes or parking brake. Have looked all over the internet for a how to post but so far no luck. My yard is a down hill slope and I need brakes, has anyone experienced this problem???? Thanks so much for any advise you could share with a 68 yr old woman!