I was a little unclear on the new weights since they are quite a bit heavier than the old ones. Here is a message I sent Frank Crawford and his response. Helps to clarify the issue
Hi Mr. Crawford
I am in receipt of the elevator weight replacement kit for my 1967 M20F serial# 670102. The new replacement weights are significantly heavier than the old weights. The balance range in my 1967 service manual allows for a maximum static unbalance force of 1.725 lbs. However service bulletin M20-345A allows for a maximum static unbalance force of 1.30 lbs. I would like to confirm that I am safe to balance the new weight to the balance limits in the service bulletin and Not to the balance limits in the 1967 service manual before I perform the installation of the new weights. Please advise.
Hello Robert,
The Service Bulletin does indicate that the Weight is to be balanced per the Service Bulletin M20-345A – The 1967 Manual (Do Not use the Data from the current 1967 S&M) this only shows balancing information for the Hybrid weight 430018. The Service Manual will need to be updated to show this (I do not have a time table as of yet), but until that time, the balancing data is shown on page 3 and 4 of the Service Bulletin M20-345A.