I have a set of twin HS2s and a 38mm solex for my mini and was thinking exactly the same thing. More time to tune the twins but a better look under the bonnet.
Either will be a good option
The next job on the list was assembling the diff. I've been putting this off for a while as one of the diff bearing inner races was seized onto the crownwheel. I had a similar thing happen a few years ago when I was replacing a rear wheel bearing. There wasn't enough metal overhanging on the rear to pull it off with a bearing puller, so I had to get the angle grinder out...
When you grind through far enough it'll crack all the way through and release the tension.
Finally free of the race! I ended up deciding on a 3.44 ratio
I'd assembled a diff before, and this one went back together very smoothly. When Justin had the diff cage he made some reliefs in the diff cage to accept the later A+ style planetary thrust washers. The benefit of these is they have a tab to stop the thrust washers from spinning with the planetary gears. This means the diff cage won't wear out, which is nice as good ones can be hard to find.
So now the diff is ready to go back in, next I need to get some new diff bearings and clean up the diff side covers.
Edited by timmy850, 31 March 2019 - 07:36 AM.