I made one for less than $15 and it is adjustable. Neodymium magnet with a 1/4-20 female stud, piece of all thread, and plastic disk cut with a...
ATV and a log arch. You will be blown away at the size of logs you can pull, especially if headed down hill. Less 20% of the log drags so it...
I think it's ash also. Poplar bark generally has deeper grooves and with more space between the ridges (wider furrows). Peel some of the bark...
If it is a newer unit, the bolt that holds that bearing in place should be drilled so you can grease the bearing with grease gun using a needle tip.