I need to replace the tie rod end dust covers on my Kubota B20. According to the parts manual all four of the dust covers are the same; part #38240-12650. I've been reading a few articles and watching a few videos on the internet and they all seem to agree that the Kubota covers are made of rubber and will not last very long. Several of the videos talk about polyurethane upgrade covers for Kubota replacements but no one is putting them on a B20. Wondering if there are any B20 owners out there that have used the upgrade covers and which ones did they use. Or, if you have used the Kubota covers, did they seem to hold up very well?