The slowdown kit is sold by caseih. For 2188 the part no. is 303188a1. If your machine does not have it it needs it. You will also probably need a shaker drive pivot support kit before long. Part no. B95353. If you have had the bolts loose through the seive hangers, make certain the hangers are in the center of the stroke of travel before tightening. If the bushing is in good shape and centered, The rubber should run out of stretch before the seive hammers against metal. We have never used lock tite but we have always used a jam nut.