wouldn't your dj1 be spewing oil after about 3 grinds on that thing? the soft aluminum/magnesium of a fork lower really sucks for grinds, no?
true i see what your saying i've personally never had any problems with it as i tend to grind just on the peg i have a few marks on the lowers but nothing to bad all you'd need is a small plate welded to the bottom of the peg as u can do it up from the other side so no need to spin the peg
none of mine do buti suppose it wouldnt hurt if its a close fit my diamond plate one has pin grooves from the half link chain cause the chainline wasnt perfect so it machined relief groove son its own