Bought some new chipper knives from zenith right after bandit bought them out..long story short...anybody else using these knives and seeing a remarkble improvement on longevity? The new machine I bought these 4 sets for was a 1590 wtc.. according to jomoco...lol. haven't used the the new blades in our older 1590...swapped them out every 2 weeks...getting 3 easy on our new 1590. 140 upgraded to 173 and a supersized feed system. Must be the knives. Thoughts? Buzz has been quiet. Too quiet.










