Scratched cylinder bore

I finished the total tear down and found some amazing things:

- 7 out of 8 pistons had the top ring broken
- 1 piston also had the 2nd ring broken as well as the top one
- the piston in the scratched bore had two different type of clips on the wrist pin - the side at the scratch had a wire type clip while the other side had the normal stamped steel ring clip.

The last point tells me that someone tore down the engine before me to replace the loose wrist pin clip, totally ignoring the scratch while putting it back together. This piston had no marks on it whatsoever from the original clip, so that probably means that it was replaced. That same guy probably pulled all the pistons for an inspection, and when he reinstalled them using the original rings, he forced 7 of the top rings to the point of breakage. When he was done "rebuilding" the engine, it probably had a terrible miss in the cylinder with the two broken rings. I'd like to know who this guy was so I could stay away from his shop!

Well now I'm all ready for the machine shop. I will probably need to buy at least one piston as I dropped one on removal and snapped off about 1/4" off the skirt on one side. Oh well. It also looks like the bores are 4.04" per my calipers. This doesn't mean they aren't barreled. I'll let the machine shop check this out as I don't have the gauges.

Do I need to have the crank balanced for street use? What do you suggest?