Lonnie,
While I was at my brother's house he gave me a project to repair, retube, or replace a wheelbarrow tire, which had gone flat. Once I got it off the rim, I found that the reinforcing cords were actually loose inside the tire, there was little or no rubber holding them in place. Ended up just buying a whole wheel assembly.
Cub related, I decided to resurrect my ailing 125 over Easter weekend so dad could help with the mowing. I got it started (with difficulty) and Dad nursed it along for an hour until it ran out of gas and we couldn't get it restarted. While Dad finished up with the 129, I pulled the head for the first time on this particular tractor since I got it for free from a neighbor several years ago. I found the cylinder in pretty good shape, no scoring and as far as I could tell, only a couple thousandths of wear. The valves on the other hand were badly burned, the exhaust valve was tulip-ed and the intake was worn as well.
Going through my collection of Kohler engine parts, I found a couple of valves that the local NAPA dealer reground for $3.00 each, I lapped them in, and restored the valve seats to reasonable shape. The most difficult challenge seemed to be getting the valve retainers back in, even with the help of a valve spring compressor. Part of it seems to be fat finger syndrome, I was wondering if anyone had any special tricks up their sleeve, other than a dab of grease on the valve stem bottom.
I got the engine all back together yesterday, tried it out a bit, and put it to work this morning on the lawn. Plenty of power and no smoke, though I have been fiddling with the governor to get it to work right. Most of the trouble seems to be slop in the linkage, I looked at both the governor arm to carburetor linkages I had available, and both were worn about the same. I got it working better by putting the ball joint into a vise and carefully squeezed, hammered, and centerpunched various places around the ball to take out most of the slack, then put a little heavy oil on the ball.
I sold the bagger attachment, but I still have that weird seat on it. Perhaps I will put the extra Ohio Rubber seat I have on it.