I thought that , but it was done by the dealer , I suppose they could have over torqued them , as a matter a fact it was the mechanic that was testing it when it happened . rode on the trails all day yesterday seemed ok and opened it up on the lake to 107 mph and no issues , checked the rollers this morning and one is rolling freely on the helix and the other two seem fine , and this is with the new updated rollers and a new helix was installed at the time they repaired the snapped studs , as a mater a fact they told me they took a whole new secondary off a new sled and put the updated rollers in and put it out the door , so i dunno what to think and the updated rollers look kinda rough this morningover torqued