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Alex..... ...the brakedrum screws are really for assembly line usage, keeps the drum on the tractor until the rearrims get installed with 8 lugnuts. none works just as well as 2 or 4. Puttin yer 2 and donnna worry. Metal shims came in 3 different thickness. Don't confuse shims with paper gaskets (thinner) which look the same and are mis-numbered the same shim partnumber. Now adays, they tell you to use the paper gaskets as shims as they'll also tell you that metal shims are NLA (they lie). Some people are so paronoid about leaking oil out the trumpet seals muckin'up their new brakeshoes, that they go around RTV'n every surface to prevent oil from leaking out the shims. You can iff'n ya wants to but remember to really squeeze that shim-pak so you gittchur bearing clearances right. Remember, bearing clearances, too loose is better than too tight, but just right is bestest of all. The new retainer seal assy, check it carefully, The seal needs to be "off-set" just a tad so it centers things up. I had some seals that were flush and I couldn't make things line-up. I always lube my seals with greese to protect them during installation. One other last hint, wipe yer BIG trumpet paper gasket with warm water to allow it to stretch to fit over the diffy studs..... ...Dell
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