The phone number is 800 667 5082. Easy as eating pie. Just take off precleaner, chaffer and chaffer extension adjustment brackets by removing one bolt. Drill one hole, and mount new kits with two bolts. Precleaner kit comes with a crank. Sieve adjuster mounts on outside of combine, and adjusts both sieves at the same time. No more fooling around with the flat bar. Pricing starts at around $80.00 for a pair of handles. Or you can purchase all new precleaners, chaffers, chaffer ext and sieves from loewen with spring loaded sundial handles, but that would be quite costly.