Here’s my experience. Wearing out bushings ever 1200 miles on my viper (it’s the same size bushing). Oil hole or no oil hole. I was using red line shockproof gear lube, so that’s not the issue. I decided I would leave the chain looser, lightly finger tight on the adjuster then backed out one turn. Seemed way too loose to me but hey, that’s what the manufacturer recommends. I’m not re-tightening it except for half way through the season. Ive been checking the secondary backlash and it hasn’t changed much at all.
My buddy’s cat has the automatic adjuster and he was ruining bushing like crazy, went to the manual adjuster and his junk is lasting forever.
I’ll report back around the 4th of July.