I use the following with good results...
Harbor Freight Tire Mount Kit (Tire Kit + Motorcycle Add on I don't see right now):
http://www.harborfreight.com/portable-tire-changer-69686.html Price varies with sales and coupons, but I was out the door for ~$75 with both if I recall. (sale stacked with 20% coupon)
Mojolever:
http://home.comcast.net/~prestondrake/mojoweb.htm $90
Mojo Blocks:
http://home.comcast.net/~prestondrake/mojoblocks.htm $30
Marc Parnes Balancer:
http://www.marcparnes.com/BMW_Motorcycle_Wheel_Balancer.htm#BML $105 for his BML unit that works for your K & R bikes.
I bought the above tools gradually over time, and while my setup works fine I probably would have tried the No-Mar machine if I had all of the the money spent up front.
The HF changer was too inexpensive to resist as a cheap entry system and works even mounted on some 3/8" plywood. I was skeptical, as I am not a fan of many HF tools, but it has not caused any problems.
The Parnes balancer is spendy, but silky smooth goodness and sets up easy with jack stands or whatever you have on hand. It also packs away nicely rather than adding to garage clutter. I was fortunate to get one as a gift, but after using it a few times I would not hesitate to buy it again if needed.
While the mojo stuff works, it is the only part of my setup I question in hindsight and I occasionally wonder if I would have been better off getting the No-Mar bar or just irons. (my inner cheapskate is chanting irons at the moment.) The lever works, but the angled nylon on the mount end is simply mounted with a single bolt and can pivot on the user when first learning. I figured out I was just doing it wrong, but I could see that part failing on someone more persistent when learning, and for $100 that would suck to see it fail with no extra replacement bits included. One also needs to add rubber or something else grippy to the mojoblocks to prevent the wheel from spinning. (no biggie..old inner tube stretched over them works.)
I use Ru-Glyde tire mounting lube and basic sticky weights as consumables. Despite the cost of the above, it paid for itself quickly compared to having shops mount and balance for me. (Especially considering the ability to get great deals on tires online shipped to my door.)
Done rambling...bye.
