My Paramender was pretty cheap because the lever was broken. I did investigate having a replacement 3-D printed but that turned out to be more effort than I was prepared to expend.
Flushed with success at my previous modification of a Manfrotto tripod head using male-threaded adjustable levers [1] I thought I'd try using a female-threaded adjustable lever as a replacement for the Paramender's original.
The original lever is plastic moulded around a knurled brass insert (see attached photo); it is fixed to the Paramender's cog spindle with an expanding pin pressed through a cross-hole.
My replacement lever has an M5 thread which I drilled out to 6mm, and added a 3mm diameter cross-hole. I was able to re-use the original expanding pin.
The only pain was that I had to buy four levers but as they only cost £5.80 I'm not complaining.
I hope this is useful to someone else.
Sig.
[1] -
https://www.photrio.com/forum/threads/from-knobs-to-levers-tripod-head-modification.192419/