I have been looking to purchase a valve shim removal tool for valve adjustments on my 85 V-Max. I am finding several different numbers for what appears to be the same tool. The numbers are 04105, 04105 YM-33961, YM 04105, and 35-3462. While checking online the main compatible numbers stamped on the tool seem to be 04105 which Yamaha says is no longer available from them and Ym-33961 which the local Yamaha Dealer is going to check out for me tomorrow. Just wondering if there is any difference over the years in the tool or the mechanical part or why different numbers if they're the same item.