Took my Attak, have same drivers and and track as you, did not change gearing only changed rivets in stock weights. Did not perform well at all. Was ok in the open, but any climbing would not backshift and lose rpms big time. Have not been out west since, but have geared down to 23/40 and added DragnFly weights, that has greatly improved the backshift. This is what I run in SK now, for Revy I would gear down even more (20 or 21/40 at least), but machine will always have trouble trenching with the mono.