Keith, the other tool that Bill and I both use dor “cleaning” LP transcriptions is a piec iof software called ClicRepair - it costs a little ($40 when I last looked, but is well worth it IMHO - see this sticky thread: https://forum.audacityteam.org/t/click-pop-removal-clickrepair-software/1933/1
With c. 1,000 LPs to work on that’s only 4c. an LP 
What I do is capture the LP (one side at a time), Export a 32-bit WAV of the capture, process this through ClickRepair and then re-import the repaired fWAV file back into Audacity for all further processing.
WC