The over-all build phase is pretty much complete. It turned into a little lightweight custom bike. I put it together to suit myself.
It's small, it's agile, and it's fun. And since removing a bunch of weight, it's pretty dang spunky! Not "fast" by any stretch and, it won't be raced. A few things left to do, such as a custom rear fender, tweaking the foot peg position, and tuning up the forks.
I changed the tank mounts, "de-emblemized" the tank and painted with single stage black urethane enamel, built the seat, de-tabbed the frame, and cleaned and lubed all the movable joints. Then I had the frame and wheels powdercoated. I'm not in love with the wheels. I'd like conventional spokes, and down the road, I may change 'em. But then, I may just start again on another bike. This one has been a good learning tool.
Problems along the the way were relatively minor. I swapped out the vacuum BS carbs for VMs, and that made tuning much easier. Mostly because parts are easy to get.
The biggest problem was with the electronic ignition. It would intermittently drop a hole after a few minutes of run time, and after a few more minutes, it would pick back up. This made it so that I wasn't willing to ride it any further than I was willing to push it! Replacement ignition control boxes are just not available, and I ran into a stone wall in getting an aftermarket solution. The bike world is so far behind the automotive aftermarket in this regard. So, after a little research I found a solution. GM HEI ignition modules using the stock suzuki magnetic pick-ups. I used aftermarket coils too. After modifying the pick-up mount plate to be able to adjust timing, I found a setting that the bike runs well at. The stock pick-up arrangement does not have mechanical advance. Ignition advance was in the "ignitor" as Suzuki calls it. The HEI modules have no advance either, so the timing is locked in at approximately 28°btc. The photo below shows the modules mounted with jumper wires for testing. The wiring has now been made permanent. The cool thing is that these modules are time tested and inexpensive. Not everything to everyone, but a solution for keeping some of these bikes alive that doesn't cost a ton of money.