Don’t know if I titled this correctly, a previous post I read was concerning erratic forward and rearward movement with the levers. Someone here on this forum alluded to little shock type things that makes it go smoother. My Toro Timectter Z 4200 has these but, on my 2006 ExMark Lazer Z with 19 hp. I do not see these. Are they on this Mower? LHP19KA465. Thanks