NDDan
Guest
Standard black helicals were 1_2" tall new. Chrome are 5_8" tall new. Chrome highly recommended for height and long lasting. Now if you are not going to replace any helicals I would recommend at least one small mod to second helical from gearbox. Take a look how it will dump straw on left side of feeder for a second pass over trap door and concave area. If you would trim down crop flow director so you can extend second helical over corner of feeder you will prevent some of this second pass. Just make sure you have things secured well.