Thank you for your response. In a separate post I made back when I tore down the bike in October, the frame tabs where the silent / comfort blocks mount were severely bent. I was able to straighten the tabs gently with no apparent cracking. Hopefully they will not crack over time.
I did use the factory top mounting bolt and set the new silent / comfort blocks at the correct distance apart and the same dimensions in the tabs. As far as I can tell, the alignment seems to be correct. (edited)
