Trip odo reset knob again

[tmcafe]

Sorry, I know this has been discussed before (I've read all the relevant postings). Anyway, my trip odo reset knob broke off too. I can still use it if I push whatever's left of it into the D-shaped section of the metal shaft. I got a new odo under warranty, but it came without the knob. I know one of the last fixes was a high-end metal knob machined by Sluggo (this is beyond my current capabilities).

 

So, any other reasonable fixes of late? (other than getting one from Guzzi which may or may not fit according to some of the experiences posted) Thanks.