I have a vintage Trend/Sligh wall clock that has a Kieninger movement marked 77P-80CM. I sent photos to clock works and they told me I needed on at 7.7 and on at 9.9 lbs. I ordered the only weights they had at this weight spec, and they are much longer than the 7" shell that was in the case with the movement when I got it. Now the pendulum rubs on the weights. I cannot find the size requirements for this clock and movement. I have the original setup card from Trend that say "Directions for movement 122" but they don't mention the weights. If anyone has a suggestion or can answer this question I would be greatful.